Which MacBook Pro for d800?

i have late 2011 macbook pro 17" 2.4ghz upgraded to 16gm ram(aftermarket) added samsung 256gb solid state drive for operating system and left 750gb for storage . so i have dual hard drive but no cd driver. i run LR4 ,Cs6 ,lightning and youtube on safari at the same time no lag at all… sometimes it takes few extra seconds to save huge files but everything runs fine most of the time.