I'm pretty much decided now on buying a 15" PowerBook but I'm a little torn on the details. I want to get the 128MB VRAM upgrade but you can only get that on the 1.67 Ghz model. So my options are....with education discount.... 1.67 Ghz, 1gig RAM, Combo Drive, 128MB VRAM - $2,189 1.5 Ghz, 1gig RAM, Combo Drive, 64MB VRAM - $1,934 Or give it a couple more weeks for iBooks to get upgraded.... on that note, what are the chances of new updates to included a higher resolution screen? Performance is hugely important for me but for the performance vs price difference, if that happens i'd go with an iBook So do you think its worth the extra $250 for the upgraded video ram and extra 170Mhz? Mostly for gaming purposes that i'm even considering the difference, none of the work I do is graphic-intensive as my most frequently used programs are mathematica and matlab. also.... can you get the $100 education rebate on top of the education discount?