Should I get Windows 7?

No. If your PC works, don't fix it. If you are required to keep up, explore, etc; then here are 5 reasons you should get it.

1. Judge for yourself.
2. Figure out what works.
Source: Five reasons you shouldn't miss out on Windows 7 free trial

3. See what you're missing.

4. Is it worth it?

Source: Five reasons you shouldn't miss out on Windows 7 free trial - Page 2

5. Supplies are Limited.

Source: Five reasons you shouldn't miss out on Windows 7 free trial - Page 3

XP to Vista? No, if it ain't broken, don't upgrade it | - tales of long logins on Vista