I will not going to sell you anything, but give you an honest opinion.
Windows 7 is great, but not that great. It has problems running Windows XP applications, and won’t even run Windows 8 applications in the future. So, Windows 7 is just a farce.
It may work well with others, but in this dire situations, it’s better to wait. There will be another Windows after three years just after Windows XP is no longer supported.
The good part is, if you bought your new PC today, you can use it when future Windows comes.
Please understand and don’t blame it on me. Just like in Ubuntu, we are also human beings. 🙂