Windows 64 bit 7 worked right out of the box with all my hardware and software. Windows 7 has some nice GUI features not in Vista. Vista sucked and Microsoft should have given it to the Vista users for free. Worth using.
OK, I'll keep it simple
Vista - Pain in the neck security settings and a resource hog
7 - Much less overtly security sensitive (Don't need a degree to get it to run smooth) and has a much better footprint. i.e. boots faster; runs smoother.
That said they both use the aero interface. They've made some out of the box changes to appearance, but nothing you can't do in Vista.
If you want to upgrade from XP to 7, please be aware that you will need to do a clean install. In other words, back up everything you need to save. This is what I would recommend anyway, but if you go from Vista to 7 you can upgade directly.
Hope this helps,
I bought my PC with Vista, two months later they came out with 7. Honestly, do any of you think its worth the upgrade? I'm leaning on no, but not sure.
As they say and has been suggested, if it works and you have no problems, then just stick with it, no need to mess with it. HOWEVER, if your system is new enough that you have the upgrade option, TAKE IT, you will be glad that you did. Otherwise, leave it be, don't spend money JUST to upgrade.
Windows 7 could be though of as a major Service Pack (SP) release for Vista. It really is Vista with fixes, patches, updates and upgrades.
You should see a little better compatibility, fixes in security and networking ease, and it is supposed to be a little less resource hogging.
I have a FREE UPGRADE certificate for 2 laptops that I bought right before the W7 release, that I haven't done yet. But I'll do it just because it's free...gotta love free, right?