These were UPGRADEs, not a clean installs? Just wanted to clarify as I am considering this as we speak (as I'm sure many are). I know that a clean install is always preferred over an upgrade, but it is so painful to reinstall everything (which I've done many times and have yet to find a great process for doing so).
Also, which version of Win7 are you installing (home, pro, ultimate)?
Either way, thanks for the feedback.