I have a 3 year old MB pro 15 that I use now and love it of course. I use it to do PP but have some problems with consistent color, but also use it to run my 20" CRT. I am thinking about the new 17" they have a new screen with anti glare as an option and higher resolution. I am also entertaing the idea of getting a 27" Imac but I like the portablility of the MBP. Any ideas? Also what is a used 3 year old MBP with new 320 gig HD, 3 gig Mem worth?