Got an R350 a few weeks ago. 7 seats, Nav, Serius, back up cam, pano roof, heated seats, and some other things. It's primarily used for work. Love the silky smooth ride.
Wanted to post that I picked up 4Matic alpine rain metallic with P1,IPod & heated seats yesterday for a great price, at least that is what I think. This is my first MB and hope to enjoy it with my family.
Anybody in SF bay area looking to get a deal done go to MB of Oakland and talk to Chris Phan (Internet fleet manager).
Thanks to this site I learned a lot about of R series and MB in general.