OCZ build very good quality PSUs. I personally don't used one, but I've bought a few for friends and they turned out excellent.
I had a surprisingly nice experience with Microsoft when I was trying to install Windows 7. The key wasn't working for some reason and I called them up. They said they'd send me a new key via e-mail in the next few days unless I managed to get it working. I got it installed, but it wouldn't activate. Then I saw the registry edit and I used that. It worked flawlessly and I didn't end up needing a new key. Let's see how the installation works on the new hard-drive I got (which should arrive Wednesday at the latest). Hopefully, I won't have to do the registry edit again because I forgot what I changed.