I just got a pair of HP G62-227CL computers with Windows 7 Home Premium installed. I'm thinking of upgrading one to Windows 7 Pro and the other to Windows 8.1 Pro if I can afford it. Amazon has a copy of Windows 7 Anytime Upgrade for $399.99 which seems a little high to me. I don't see anywhere on the Microsoft web site that gives a price or availability for either of these upgrades. So I'm looking for suggestions and recommendations.