Hi guys, I have a pretty tough decision here. My friend wants a Mac and he wants to buy my 15" MBP for $600. At first I was completely against the idea, but then I started thinking: should I sell it to him and put up the $600 for the 13" Unibody, or keep it and buy a new keyboard, max the RAM, a new battery, and a used cinema display for it for nearly the same price? First, I love my 15". But I also love the Unibody. I don't like the 13" size, but I would take it just for the Unibody. I love the Matte screen on my 15" more than the screen on the 13". On my 15", I had Apple replace the Logic board (the dreaded 8600 problem). I like the Unibody keyboard more. I dislike the Unibody expandability options (no FW400). So I guess the pattern that's developing is should I go with the newer macbook pro or the older upgraded one?