I did the C-525 at SimCom. Over the last 20 years I have been to all three and see very little difference, other than price, between them. If given a choice and the price was the same I would take SimCom unless another location would be more convenient.
Not sure about the CJ, but for the 500-series, I've been to SIMCOM and FSI and have to agree with Headwind in that the biggest difference is cost. Good and not-so-good instructors at both. Some with experience in the plane, some with none. Convenience is the biggest issue.
For example, SIMCOM is cheaper, but I live in the Atlanta area, so FSI ATL is the best way for me without hotel/rental car/airline costs.
You do get more goodies at FSI - calculator, cool bag, books, etc. each time you go, but do you really need all that stuff EVERY TIME? Maybe that's where some of your (and my) money is going!
Wow, I am suprised that you guys had anything nice to say about SimCom. I went through the Citation 2(500) training back in 2006, and I thought that it was horrible(however I did not have anything to compare it to at the time). And recently I just got out of FSI on the Gulfstream and think that there is a difference that is night and day. A guy who was training with me on the Gulfstream had a very similiar experience to me at Simcom. If you are looking for a cheaper alternative to FSI check out Simuflite, I have a friend that uses them for the Citation 650 he goes to the Dallas facility and he really likes them (plus you are next to bone daddy's!).
For what it's worth, I have done BE400/Hawker400XP recurrent at FSI, Simuflite and SimCom, very little difference. Had very good instructor at Simcom, last training at FSI-bad experience, Simuflte-generally very good. I will be going back to SimCom, much less $, good training.