Just picked the car up last week. My second MB. First was a 2000 CLK 320 Cab. Loved that one. This one is an absolute monster! Perfect blend of sport and luxury! The car has unbelievable road manners. Will give you more than enough power to pass just about anything on the road while still giving me that classic MB experience. Much better suited to my driving habits compared to my CLK. I hope this thing lasts a very long time...I'm expecting it to.
REST allows you to use residual heat or A/C for up to 30 min. Also like the remote feature that drops the windows and rolls them back up for you.
None that haven't already been implemented in the newer version.