The installation of Vista didn't go quite as well as I had hoped. Actually, most of it went well with one big notable exception. I have a widescreen laptop with a native resolution of 1280x800. The ATI driver that's bundled with the latest build of Vista is accelerated for the 9600, which is what I have, but it only supports 800x600 and 1024x768. So, despite Aero working very nicely, the screen just looked like crap.
I've reverted back to XP but I've left 20gb for a later version of Vista. Hopefully they can get around to fixing this big problem in a world where laptops rule the day.