It really does depend on what you're doing with Vista...
For business users and home users Vista would be fine and appears to perform fine...
Although, if you're gaming, nVIDIA and others have been a tad slack with their drivers and to be honest, suck when playing games
So, as I am a gamer, I am going to wait for better drivers first..But if I owned a business I would definately make the switch to Vista
Matt