I am thinking about getting a new Powermac and hoping for some advice. Do I go with a sexy G5, a proven G4, or put a few bucks into a new hard drive and push some more life out of my 400mHz G4 until a revised G5 comes out? What are people's overall impressions of the new G5's? Obviously every model has some problems, but I am especially wary of the first iteration of any new hardware (first G4, first iMac, etc). Thanks!