I've been looking around on eBay for a few weeks now, trying to figure out where prices stand on the old G4 iMacs. Naturally, getting one that was the most powerful in its day would be nice, but they're still running above my budget. I've read Apple's specs for running Tiger, and it seems that an 800 MHz/512 MB RAM machine would run Tiger just fine (when running an "average" set of applications like Safari, iChat, and Word at the same time). Do any users out there have a similar internal setup in their G4 iMac? What would you advise?