Weight or screen real-estate, that is the question! Just curious what everyone thinks about my situation. I currently have a MB and it's great, but as my projects grow it size, it tends to bog down. So I have decided to get a MBP (if the Montevina update strikes my fancy). At home I plug in desk-top-style with a 24" monitor, keyboard, mouse, and a couple of HDDs. I carry it with me to school several days a week, so I was looking at the 15", but at school I'm running 3D CAD and Rendering programs, as well as CS3 programs, and am starting to like the idea of a bigger, hi-res screen. Weight with the 17" is my main concern, lugging it around. With a 17" screen, at home I could leave it up when plugged into my ext., and have a dual-display setup (not ideal, but better than just the one screen, or my 24" and a 13"!). Obviously not in any hurry, but does anyone here have a 17" that they carry frequently or any input? Thanks.... Sorry if this has been posted several times already.