You should really find a way to get a look in person at the different display options. I've been using my 1920x1200 17" i7 for two days now and looking back at my 1440x900 native 15" MBP looks like a made-for-kids computer or something. Everything in 1440x900 is so blown up that I feel like I have no room to work in that resolution now comparatively. Of course, if you have bad vision then thats a different discussion... but if I was buying a 15" right now, I wouldn't even consider a 1440x900.