Incidentally, I finally went back to the store in question and discovered that the G5 had been sold. I think if I'm ever specifically seeking a G5, I'll go ahead and look for a dual 2.0 or 2.3 GHz PCI Express model, which will be easier on physical maintenance and probably every bit as fast as I'd need for an application box to run 10.5, Office 2004 or 2008, and Creative Suite 3/4.