it is great!
tried with my powerbook 1.5Ghz g4 I bought 3 years ago. Runs smoothly. 80GB HD seems plenty to me, but I have to upgrade memory to 1GB half years ago.

They had a battery recall 2 years ago, and charger failed last year, so I have to replace it and paid ~80$ for an apple charger(!!!).

During the same period of time, my wife went through 1 HP laptop, 2 Dell laptops and now she is using Lenovo T61.....

In general, I spent about ~2.8k for my laptop, while my wife spent 1k + 0.6k + 0.8k + 1.1k = 3.5k....

Did anyone try to run vista with their 3-year old laptops?