Windows 7: Windows Vista to Windows 7 - Upgrade or clean install ?

Hello,
I have windows Vista business with SP1 installed on a Dell Latitude laptop D830. I have run Windows upgrade advisor , it is giving me clear signal to upgrade to windows 7 professional or ultimate. Now with so much news about upgrade problems occurring. Should I upgrade or do clean install? Also I want to know , if there is a difference between windows 7 upgrade and windows 7 full version? With windows 7 full version, Can I get the upgrade option also?

Thank you
Regards
Anoop

If I were you, I'd backup your files and do a clean install. This will ensure you don't take any little problems into your new installation and you will be pleased with the results. The difference between an upgrade version and a full version is that the full version doesn't require a previous version of windows to install. You can of course choose to upgrade from the full version but I don't suggest you do

See Brinks tutorial on how to do a clean install -=> Here

Clean install is best way go.

Clean Install with a Upgrade Windows 7 Version

Clean Install Windows 7

Looks like it's 4 & 0,

Clean install will give you a better running new OS.

If you have been running Vista for a couple of years it will carry over any little problems it might have developed.

As tw33k mentioned, an upgrade version requires a previous activated version of XP or Vista, and if you need to re-install it you might have to call MS to get it activated.

A full version can be installed on any hard drive new or old and can be re-installed as often as you need.