So after three years with my current machine (P4 2.2Ghz running Fedora 3), I'm looking to upgrade to a PowerMac. Regarding budget, I'm looking to go for around $1500. I would like a dual processor machine. It's use would be the typical writing papers, email, etc... with some Matlab and C development as well. Other programs would be stuff like SETI@home, roms, and Quake through X11. For the total system, I'm looking at just the computer. I already have some monitors and a USB mouse and keyboard. So what kind of machine should I look into getting? As far as purchase time, I'm thinking about this time next year.