I'm looking for the A1261. That model is the last 17" MBP that retains the old AlBook style. It can run Mountain Lion and Mavericks and possibly, Yosemite, I don't know. We'll see. But I still love the 17" form factor. I hate the unibodys and if I can get an MBP that has as close a resemblance to my current 17" PB but can run the newest stuff, that's what I'm aiming for.
I have A1260 which is the last 15-inch MacBook Pro before the unibody form factor. It flies with SSD under Mavericks and runs Yosemite just fine (although my experience with that is on a HDD and I rarely boot there because I dislike the new look), so you should be good to go in that department