I've been driving my '08
I've been driving my '08 Prius for 7 years now. I bought it for $12k. The big difference for me is that it only gets around 40 mpg instead of the 50+ of the newer ones. I do a lot of my own maintenance, and the car has 260k miles. I change oil regularly and check it often. I'm not a car snob. :)
It would take a long time, at only a 10mpg difference, for a third gen Prius to pay for itself as long as my old dependable keeps rolling!