Did you see my link above? Get both. The Vista Ultimate you can get for free. Then you can dual boot. THen you can make your own decision. Have XP and Vista on the same system, and then you will see what I am talking about. XP is just so much more responsive.
-S
PS. Here is that link again -
http://wfp.microsoft.com/Welcome.aspx - Just select Vista Ultimate as your gift.
PPS. If you would rather have Office, you can have that too:
What about the free product?
If you are a Windows Vista or Windows XP user and decide to join and participate in both programs, we will send you a free Microsoft product when you participate in the program. Limit one gift per person. This offer is non-transferable. This offer expires on 12/31/07, while supplies last, and is not redeemable for cash. Taxes, if any, are your sole responsibility. The current list of products to choose from are:
- Microsoft Windows Vista Ultimate (32-bit and 64-bit DVD)
- Microsoft Office Ultimate 2007
- Microsoft Money Plus Premium
- Microsoft Student with Encarta Premium 2008
- Microsoft Streets and Trips 2008