I've used it and it worked fine, felt a tad slow to me too.
Because I was going back and forth between Mac and one Windows app it felt kind of clumsy, especially because of the different keyboard layouts. Because of that I eventually gave up on that one app (too lazy to delve into changing the keyboard mapping). I did manage to keep all my files and data on the Mac side pretty easily using Windows Sharing in System Preferences.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com