well i finally upgraded (well did a fresh install. seemed no real diff between upgrade from 7 and a fresh install.) and only a few minor issues came up. i cant install the Toolkit to deal w/ KMS Activation (i had to do it manually via slmgr.vbs) or kmspico. atfirst i could install Java x86 but not x64 (had to update win8.1 then restart to get that to work) now only remaining small annoyance.. in Win 7 i Could use greenshot to take custom screenshots (select region then either copy to clipboard or save directly to a png) and paste into a Skype convo. but now in 8? i cant paste any image from the clipboard into skype. greenshot is how i share screenies w/ friends but as for KMS Activation, guess i just haveto manually do it everytime it's due.