I totally agree...I'm running a 5 year old G4 Quicksilver with 1GB of memory and an upgraded 933mhz G4 CPU, and the stock NVIDIA GeForce 2 w/32MB. It's feels faster than my Dull Unspiron 9300 1.7 Ghz Pentium M for email, surfing, etc., and put up against my roommates 20" iMac Core Duo, there IS NOT an $1800 difference in Finder, Safari, or Mail performance. The satisfying part is when my 5 year old clunker crushes the month old Intel iMac at just about any task requiring Rosetta...Installing other software, Word, etc.
The Upgrade Trap