I've been using Vista for a while now. I have it on my laptop, a machine at work, and a machine I built for it at home.

For a long time now we've been listening to the MS guys we work with talk about how great the OS is. They talk about how much the core OS is improved from memory management to the cache manager. Of course these are kernel people so we never talked about the GUI.

My vote? Thumbs up, I'm a fan.