I just bought the G3/400Mhz powermac in my sig, I'm looking to upgrade the processor eventually, this is what I use the computer for: iTunes: I already have all my music on it, I used iPod rip so thats not a biggie, I do rip some CDs but not that often. I watch DVDs, use microsoft office and Internet/iChat. So this isnt gonna be used for anythign real intense, but heres my question, 1GHz G3 for $210, or 500MHz G4 for ~$140. I know that the only real difference is Altivec, but other than ripping MP3s, almost nothign I do will use it. so is it worth the extra $60 to get a 2x as fast G3 or should I go G4? Thanks!