I have a limited budget, but I want to upgrade to a Mac Pro. I've looked into purchasing a 1,1 machine and upgrading it to an 8-core with a 5770 or 5870 AMD card... but I want this machine to last me a good 4-5 years. Should I hold off another 4-5 months and purchase an '08 or '09 (or even 2010 system if they're affordable) and upgrade from there? Or should I save up and get a decked out 27" iMac? All of my experience with Mac has been with the iMac, and I do love them... but I want upgradeability. The problem is that Mac Pros are just expensive no matter which way you cut it. I probably will just wait and see what Apple does. But if I were able to get a Mac Pro 1,1 for $500 or so.. would you bite?