So I'm on the market for a Mac computer that can handle (as in edit) HD video. I just saw prev gen. 15" 2.4Ghz w/ 512mb video cards going for 1300 and thought this was a good price considering the new ones with less video memory cost 500 more. Also 2 year warranty. What say you? Should I grab it? Is the overheating video card issue going to be a problem?