I have a 17" MBP (1920x1200) which has a big, beautiful screen but unfortunately the machine itself is just too damn big (and heavy). I'd like to downgrade to a 15". I was wondering what your opinion was between the high-res and standard res machine? Purely specs, the difference is 1680x1050 and 1440x900 -- how does that play out in the real world? Is it worth spending the extra money? Thanks!