I use XP and Vista at work. For all Vista looks nice and smart, I still prefer XP. Tells you something when a huge company like Dell has reversed it's stratagy and now offers XP as well as Vista. Not going down the Vista route for a while yet - not until they fix the incompatability problems like I see at work.
I didn't want an all singing / dancing Laptop. Just a dependable, well made one for general use. If I want power, I can use my desktop.