At first I didn't really like vista, it still has some problems, but then again so did XP in it's first year. Now I'm warming up to it once I got hold of all the admin tools and learned how to use them to my advantage

. One thing I still hate is that the idiots raised the system restore storage to 15% of your HDD (no you can't change that unlike XP, yet anyway) that's almost 30GB for me (morons), so it's slowly eating away at my HDD right now till it reaches 15% then it will stabilize, but still 30GB!!!! jeez, I could turn SR off and do it manually, not sure if I want to do that. Other than that it seems to be a pretty stable OS so far.
Vista Home Premium on a Toshiba laptop p105-S9337
Core 2 Duo 2GHz 4MB cache
677MHz FSB
2GB 677Mhz DDR2 RAM
200GB (4200RPM = Booooooo, the only thing I hate about this laptop) HDD
NVIDIA 7900 with 256MB dedicated but apparently it can steal some more from the system if needed.
17" Trubrite WXGA+ (alphabet soup to me but it's a pretty good screen).
Good battery life for a 17" monster too, a bit over 2 hours. My old laptop was another Toshiba 15.4" Centrino 1.4GHz/512MB RAM with STILL over 5 hours of battery life.