The 07 SL 55 has subtle but great improvements over prior model years. The paddle shift is much better than the button set up on the prior AMG. The ride with 19 inch rims is very smooth for a performance car. Best of all it is somewhat stealth, at least here in So Cal as there are so many SL's running around. My only disappointment is that the navi is still somewhat behind that of Acura and the sound system is good but not great. In a $130 K car you would think the sound system would be as good as the exhaust "sound". All in all this is a dream car and feel lucky to own one. Prior car was an 02 E55 and still love it but not a much as this SL 55 Duh!!
Top up down time and movement. Styling, and seats.
Sneak an Acura TL Navi in and you've got a homerun.