I just purchased and installed the latest version. The interface is nice, the setup is easy, the manual is great and pretty thorough, the price is definitely great compaired to Virtual PC, but the speed is awful. I'm using an iMac G5 2GHz with Tiger 10.4.6, and I set up the program to use Windows 2000 following the manual instructions. It was so slow I was having trouble clicking buttons and icons (my pointer kept jumping over them due to lag) I followed the manual's steps to optimize performance (including disabling audio and unnecessary programs) and this brough the speed up to useable, but still painfully so. As an example it took about 15 minutes to install Firefox. Even just opening windows (control panel, windows explorer, etc) took somewhere around 30 seconds. I'm going to try and track down a different version of Windows to see if there's any difference, but as it stands, even at $30, it feels like a waste of money.