I used FET for the first time this semester for my department timetable consisting of 20 teachers, 6 classes and a thousand rules :D
It was a fun learning experience and I almost got addicted to experimenting with the constraints and running iterations! I really appreciate the quick responses on the forum. FET truly has been a life saver!! Thanks and kudos! Really, Volker and Liviu, you are doing a great service to the teaching profession with your product, that too without an expectation of monetary gain. You are an inspiration :)
Thank you for your kind words, pg788! :)