Whats the difference between Windows Vista Ultimate and only just regular Vista?
Answers: I assume you're conversation going on for the difference between Vista Ultimate and Vista Premium.
As much as I similar to MS, their naming convention is a bit dumb.
So here's the diff. contained by natural language:
Vista Ultimate = everything you can attain on Vista, plus Ultimate Extras.
Vista Premium = almost everything in Vista, basically lacking a few business features and no Ultimate Extras.
I suggest you progress near Home Premium. It will enjoy everything you should involve, and cost much more cheaper.
I'm using Vista right immediately, and I'm festive near it!