cGT,
Despite my early concerns I'm more than happy with my Vista Ultimate OS now. I still run XP Pro on my old Dell and with both running side by side its clear what the differences are and I'm really beginning to like Vista now.
The only continuing niggle I have with my new set up is the networked HP all in one printer/scanner/copier/fax and to be honest I've had enough of it now so I'll be replacing it very soon. It had settled down for a while but now its back to its old 'I'm not in the mood to communicate with your PC' ways so it's being unplugged and shipped out!