I'm going to be making a purchase today at the Apple Store at 5pm EST. I need to do this ONE THING.... have iDVD STOP CRASHING. So i'm going to buy a new Mac. Which one is better for a speedy encoding? I took my 1hr and 30 min iMovie project, sent it to iDVD, crashes. Crashed on my 1.6 G5 and my friend's 2.0Ghz Macbook. Rendering video on the Macbook was fast for the menu assets and slideshow...but my 1.6 G5 encoded the 1 1/2 hour video faster than the Macbook. I thought ENCODING was done all through the processor, but after seeing it yesterday, I have reason to believe that the GPU has a role in the encoding process. I know the 950 GMA sux, but why? For those who really know, please let me know which GPU is best and Why. Thanks.