 I'm not a Mercedes guy at all, in fact I can care less about the name brand itself. BUT - that said I love this car! I did have a problem with the COMAND system that I found to be unacceptable so early on, but it hasn't reoccurred and if it doesn't all may be forgiven. Otherwise, the interior (Sport + trim w/suspension) is breath taking! I mean the stuff that attracts flies if you know what I mean. The seat belts are red!! (I nearly crapped myself when I first saw that) My biggest disappointment is the 7Logic Harmon Kardon surround system; horrible with lows (no bass at all). I've had to learn to appreciate bass-less music and once you do its a hell of a system!UPDATE (6/30/16): So far no regrets, did have a minor issue (e.g. gas cap door replaced) though. The car performs well, I have the upgraded sport exhaust and let me tell you it sounds AMAZING out on the highways! The in car tech is great,...music via bluetooth sounds better than local files on the SD card. The COMAND (infotainment) has a strong processor because it moves fast with zero hesitation even while using navi maps. I have to plug the excellent service from Mercedes-Benz of Orlando (Maitland), SECOND TO NONE and I'm serious! The way they treat me I feel certain to buy another car from them....that good!Reasonable Doubts: Those run-flat tires are suspect....gone thru two already and they are NOT cheap!UPDATE (12/30/16): I love this car,....but the tires are just too expensive. I have the Sport + package (aka AMG Line) w/run flat Dunlop sport-maxx tires and boy are they both sensitive to the road and expensive to replace! I've gone through a total of 5 tires now, $408 a piece (two covered by warranty). Other than that, the car is amazing, no problems with it at all and Mercedes-Benz of Orlando has been nothing short of EXCELLENT in my opinion. Those guys and gals have it together!Performance wise, the car sounds like a dream (exhaust note) and the steering is phenomenal! The braking power is on this thing is amazing but the cost to replace is not, so don't go crazy!