I set off with in intention to buy a 20L car and ended up buying an S350. The "what car" journey details can be found here:
http://www.team-bhp.com/forum/what-c...edes-s350.html
It was a gradual and expensive progression to a decision that is borderline crazy but as I have read somewhere - love is like Pi: natural, irrational, and very important (or real?). Within few seconds into the test drive of the S class, it was clear to me that I am liberated from the analysis-paralysis jinx. It was a tough decision to buy this car in India given it size, price and the burden of being seen in such a rich man's car. One can buy two E220 CDIs plus one Laura for this price. As I was buying from a discounted inventory and petrol at that, I was given a decent discount - so eased the budget a bit. This is just a brief review on purchase experience and initial ownership so must be taken with a pinch of salt given the usual euphoria surrounding a new car purchase.
The typical ownership and test drive reviews on this forum are of such a good quality, I am a little apprehensive in making an attempt to review. Before we get any further I want to confess that I am not much of a driver and this review is mostly about everything except the drive. I will update this thread with my driving experience if I get to go on a long holiday drive.
So let us begin the review:
1. Ride comfort
The NVH, airmatic suspension, 3.5L petrol engine, excellent seats all add up to a ride that is surreal. I have traveled on the same roads using many other cars and never in my life have I experienced a feeling of traveling by a battery operated boat in the calm backwaters of Kerala in Bangalore. Somewhat an exaggeration but the car offers a phenomenal ride comfort. Interestingly, even though I was reluctant to buy a petrol, it suits this car extremely well. If I were to buy the same car again, I would probably consider the petrol as my first preference.
2. All passengers are pampered equally
Even if you consider the fully loaded A6/E/5 segment cars, the rear seat is just a bench (maybe some AC controls and rear seat entertainment thrown in when you reach 65L budget in Bangalore). Long wheelbase S is exceptional when it comes to attention given to all the passengers. You will not feel let down in any of the three passenger seats and you will not have people rushing to grab the best seats first. Each seat has electrical adjustments with memory, heated/cooled, lumbar support (not the regular wire-mesh+motor but tiny air pockets that provide the right contour), comfort headrest. There is a fridge in the rear. Each passenger gets a chord-less headphone. There are two remote controllers. All three passengers can simultaneously watch three different movies of their choice without any help from the driver (front DVD player, rear DVD player and video AUX-IN).
plenty of accessories (all three can watch/listen to different entertainment stuff)
ample rear space
driver controls
rear passenger controls (looks as rich and congested as a typical driver's door)
rear AC controls
RSE video AUX-IN
rear central arm rest (has seat contour and massage controls)
Fridge
Comfort headrest (can shape your headrest)
3. Personal preference
I guess specs and features mentioned above are available (possibly better) in other models as well (A8, 7 series, etc.) but S class captures it like no other in terms of quality, comfort and elegance - generation after generation. As an added bonus even at this price this is a fairly common sight and relatively less attention-grabbing (I hope) yet distinct and very elegant from every angle. So I did not test drive any "equivalent" cars. If anybody wonders why not some other car with similar specs and features I have no answer. Maybe there are better cars but this is a special car in my book. I certainly would not like to go broke for any car but this
Some exterior and interior photos (afternoon was a bad time to take pics but not much free time these days):

Notice the BMW 5 series in the background.
Nice steering wheel. When the palm shifts between wood and leather you are subtly reminded to relax and not look for thrills! Has paddles and column mounted gearshift lever.
AC controls on the top. DVD (6 discs)/SD-card (16GB tested to work), etc. below with a lid to cover
Night-vision (infrared camera view of the road ahead in the night projected on instrument cluster screen) is a switch next to the lights dial. It is available only in the night, not terribly useful. Will post pics some other time. Notice the park button (unlike the pedal based hand-brake in other Merc cars). Also start/stop is through a button that can be removed so a Key can be used (very smart I thought)

This start/stop button fits into the key slot.

Car comes with Keyless-go (you never have to use the key at all) and soft/self closing of the doors (when the door is gently closed, the door pulls itself to fully close)
Command control and few other buttons in the central console area. Notice no gear-shift lever - it is mounted on the steering column.
Excellent ICE by H/K (sadly no video through SD/USB)
Push the bottom to close the boot. Rear view camera for parking is on the boot lid.
Fridge takes up decent boot space.
3.5L v6 engine (6-9 kmpl is achievable - not worried about the HP/Torque, etc.) The starter battery is in the engine bay, and consumer battery is in the boot. (I heard if the starter battery is out of charge, it can use consumer battery for starting the car - this is pretty smart!)
Fire extinguisher under the driver's seat:
USB port, remove holder strap, video AUX-IN port in the front glove box
Full size spare wheel with standard alloy.
Key - the star key chain was given free. Had to bargain for BMW-5 key chain. Mercedes key looks the money.
Wishlist:
1. Auto-Hold: S (all Mercedes cars) has "Hold" feature that works by pressing the brake (in a special way that you will learn easily) after reaching a complete stop. But you have to do this each time you stop - not cool in crawling traffic or driving on inclines. BMW/Audi have dedicated "Auto-Hold" button that automatically engages hold every time the vehicle stops. Mercedes cars can roll back on inclines, while in BMW I could use the "Auto-Hold" button and no worries of rolling back.
2. Video from USB/SD card. Only DVD discs are used for video. There is video AUX support but video support from SD/USB would have been great!
3. NAV and HUD - would have made it just perfect.
4. Distronic plus (world's coolest adaptive cruise control) is disallowed in India due to restrictions on radar use.
The Drive:
Did not do much of driving - planning a holiday drive during the end of this month and will definitely post an update on the driving experience. Whatever limited driving I have done the car seems capable but you really don't feel like driving this car hard. It may drive well or may not but you are just so relaxed and zen-like that you are never in a hurry. In comparison, it is very tiring to drive BMW slowly. Somehow I get body pains if I try to drive BMW slowly, give way to others, etc. and it is very relaxing and entertaining to drive the BMW a bit hard. Anyways, will update with drive experience after driving it a bit.
Practicality:
-Fuel economy: 6-9 kmpl seems doable (need to monitor for sometime)
-Parking needs practice - not only because of the size but because of the cost of a mistake :-) Has good assistance (rear view camera, parking sensors, etc.). At 5.2m+, it is longer than Fortuner (4.7m)!
-It can be a comfortable daily driver if you don't have to squeeze through busy market lanes and have a decent parking space at work.
Dealership experience:
Sundaram Motors Bangalore has earned this hard sale due to their extremely friendly and willing staff. I always looked like a window-shopper and not sure of what I want (because I interacted with them for their entire range). They were incredibly nice to my two super painful kids and allowed them to play with all the cars on display. This was even before they 'identified' me as a potential customer. At the other end of the spectrum, Audi dealership made my family feel unwelcome after taking a booking amount from me!! Thank you Audi or I would have been driving an A4 now! Sundram could not deliver the E class I booked (due to unavailability of the spec from Mercedes) and I was upset with that bit of the experience. Thank you Mercedes for the unavailability of the E class or I would have been driving an E now. But overall the staff at Sundaram has always made me feel comfortable and answered my calls and queries promptly without any trace of irritation.

Hope the service and ownership experience will also turn out to be great!
Credits:
Got lot of support and advice from many tbhp members, thank you guys. Two members deserve special mention:
@S350L-E240: a willing wikipedia of cars - I bugged him with all my questions and apprehensions and he was patient enough to answer me. An absolute gentleman and incredibly knowledgeable about cars so his overwhelming love for Mercedes can be forgiven. To be fair, he encouraged me to look at X3, A6 and A8. He just can't hide his affection for Mercedes and I hope he doesn't get banned
@diffsoft: Mr Safe-hands with money and master of restraint, I wish I could follow in your footsteps. Thanks for listening to my incessant banter about cars and agreeing to come along when time permitted.