thatscaptaintou - the MCC/JOC at OAA is very well taught. Its probably the best part of the APP programme and I have heard nothing bad said about it. The instructors are all ex-airline and have a wealth of experience between them.
The sims aren't the most amazing things in the world (visuals are a bit naff), but they are modern, full motion and are very well maintained. If you haven't flown a jet before, you'll love it.