system
7
Disclaimer…Just My Opinion
Totally your call but if you do decide I would elect to do the clean uninstall method.
Yes, I know a lot more cumbersome than hitting the GUI but I think worth it.
FYI, I have not upgraded yet…going to wait for next code release, keep reading the forum, then try on one of my W7 64bit machines.
But…I am very conservative guy too.