Sucker/pioneer...depends on how the cookie crumbles.
For me, other then a few side problems, Vista is hands down faster in multi-applications.
Also, data access blows XP away. Try to have a bunch of files in a folder and time VISTA vs XP. Hmmm is it even close?
There are so many good points for VISTA, that all I can say is see for yourself. I didn't choose the system though, I chose the computer, and it came with the baggage.
That said, the system is very nice, and I am really contemplating switching my main computer over from XP. Getting better all the time, and MUCH MORE STABLE!