Are these older PowerMacs worth 500-700? That is what one can get them for on eBay. The dual 800s and 1.2s are about the same price as an entry-level G5. So what kind of a computing experience will I get with a dual 450 compared to an iBook G3 500? I need to burn DVDs, CDs, surf the net, email, IM, write code, Photoshop, Office and play a few games. I could always put in a SCSI card and SCSI hard drive and a larger video card. Comments? Thank you!