i need your help guys. is there still an incentive to buy a g4 (dual 1.25 for example)? how long would Apple still support these machines? is it a better investment to "go broke" and get a G5? the mac to be bought, would be used as test machine (basically learning to edit with dvd studio pro, fcp, burning dvds, photoshop). the 20" iMac is enticing. how about a 1,6 g5? thanks in advance.