I need input and help from fellow sharkys. I had run Windows 7 RC for quite awhile on my 939 AMD 4800 and found it much better than Vista Business. I gave that machine to my daughter and rebuilt a new one recently ( rig 1 below). I installed Vista Home premium 64 bit OEM from Newegg with the Windows 7(W7) upgrade coupon. I ordered the upgrade. Earlier in July, I was able to order W7 Professional upgrade for @$99 ( it was that 1/2 price special from MS). My new rig is definitely going to W7 - I'm just not sure which version. The upgrade from Vista Home to W7 home is simple. Would it be wiser to use the W7 Professional upgrade (I know it will only work as a clean install) instead of the W7 home upgrade?

I could use the W7 home premium upgrade on my wife's Sony laptop that has 4 gigs ram and Vista 64 home premium on it.

Pros and cons?

Can I use the Vista 64OEM home premium license to qualify for the Windows 7Pro upgrade even if I have to do a clean install?

Rig 1 is very powerful and I might be tempted to run XP virtual machine in it but that requires at least W7 Pro.