I need some advice. I'm probably going to get some sort of Mac whether it the iMac, mac book pro, etc for school/work. But since they're a bit too pricey, I'm going to probably go the route of ebay. Anyway- Does anyone have the new Mac Book Pro with the built in battery that you can't change? And if so- are the old ones better? (like 2007'ish?) And would an iMac be powerful enough to run Ps, Ai, C4D, etc at the same time? Trying to get the best bang for buck, because I'm having a hard time shelling out 1600 or so. The Mac Pro is obviously out of question.