I used the pre-release for a while; it wasn't
that bad. I soon got used to the way you launch applications: hit the Windows key, type the name or part thereof. e.g. "Word", or "Control" for Control Panel.
I got rid of it not to go back to Windows 7, but to go to Linux. On that laptop I'm back to Win 7 for reasons related to applications. If I'm to try Win8 at all, it will need to be really cheap ..!