I have returned to the days when I enjoyed computers, like when I had my A3000.
like sdyates - i switched to Mac (i switched 2-3 years back).
i confirm that you do indeed get the feel good factor back.
Mac OS is great and gives the user the option to go "easy to use" or "as complex as you like"
it's really that good. i have an Ibook g4 (1Ghz with 768Mb ram). it still runs brilliantly.
if you were to ask me - don't waste your cash on a 2nd hand system and go for a new MacBook. you'll not regret it, plus you can "boot camp" it for running windows.