Background story: I've got a 1.67 GHz PowerBook, with 1GB of RAM, from early 2005. I do a lot of video work, and as of the last year or so, started doing a bit of 3D modeling/animation as well as After Effects work. When Apple introduced the 8-core mac pro, I got that to replace my PowerBook and be my primary computer for the next few years. Being a college student who lives off campus, I travel onto campus every day. The hour/two hour breaks between some of my classes and screenings (film student) do not provide sufficient time to travel back and forth to my apartment to do any work, but those are precious hours that I could be working on stuff... so I'm stuck on my PowerBook. Needless to say, a 1.67 GHz PowerBook isn't cutting it. After Effects CS3 is runs like molasses and I'd rather not spend 5 hours rendering a 15 second 3D animation from Cinema 4D. Which brings me to my point: I want to get a laptop that can actually handle a portion of what my Mac Pro can. I'm looking at the 15" MacBook Pro. But I'm not sure if I should spend the extra $500 for the upper-end one. 2.4 GHz would be enough... but part of me wants the larger cache. 256MB of VRAM is double what my PowerBook has... but 512MB would match my Mac Pro! I'm going to upgrade to the 7200 RPM drive... which is $90 for the low-end MBP and $45 for the upper-end MBP. Am I just falling for the "numbers" of the specs (and they really won't make a difference)? I mean... I could buy AppleCare on the low-end one and still save $250! Suggestions?