I've recently purchased PFE and have yet to use it (I currently use Radar Contact, and have also purchased ProATC-X but have stopped using it). I haven't used it yet because I am reading the manual, and I just wanted to say that the PFE User Manual has to be one of the BEST manuals I've seen, including the numerous manuals I've written myself in my 35 years in Data Processing/IT. It's one of those rare manuals that is not only informative, but fun to read!
Kudos to OnCourse Software!!!