We have been using the ELAN G System for about a year and a half now, and it is an awesome peice of control software at half the price of crestron and way more capbable than controll 4. It is very versitile, and sometimes will create a handfull of ulcers when doing the intial set up, but once you get the kinks out of the set up it is very user friendly and our clients love the fact that they can controll stuff from off site via their phones, ipads, PC's etc.
I went to some elan Training in Minnesota a couple of weeks ago put on at SLAMCO in Chanhassen, I cant remember the trainers name, ( he was from Pheonix) and did a great job.