If you insist on going PPC, invest $100 (btw, I dont think ANY PPC macs are worth more than $200) in an IDE SSD. You should be able to find a 32GB SSD for less than $100. The SSD, even with IDE, will conceal a lot of the sluggishness of PPC. Leopard on my 1.33 12" PBG4 actually felt "snappy" (as expected, it still can't handle h264 and HD videos) , and I'm sure Tiger will be even faster. Office 2004&2008, which takes notoriously long to load even on C2D Macs, starts up in an instant.