I have had numerous initial and recurrent C-500 and HS-125 training events with SIMCOM. Great facility, curriculum, and hospitality (Orlando much better than Scottsdale). As we all know, the quality of the training event is dependent upon the instructor. My experience has been better than half, but each has his/her own.
From my experience, given the odds of good instructor, I recommend SIMCOM as they provide the same quality training as Flight Safety (which I have attended) for significantly reduced price, especially if you are returning customer.
Bingo