In just a bit over my head right now. I see MicroCenter has the slightly older model - MA896LL. This seems very close to the current 2.4 model. I've looked at both, but aside from the 40 gig hard drive difference, don't really notice a huge difference. With my wife's educator discount the current 2.4 mac will put me just 50 bucks over the MicroCenter model. I'll probably never touch the entire drive space so is one better than the other really? Looks like a different chipset. Keep reading about zebra striping with the current model. Does it affect both? Any guidance or reading material would be nice. I've read the general specs and tried to search the best I could, but just haven't had much luck. Thanks!