I did my MCC on the L1011 sim at EGHH a few years back. Not the cheapest but gave me heavy sim time. It also gave me contacts on the B727 sim in the same building. Both these sims are used for airline interviews. One of which offered me a job.
So I say if you are going to do the MCC pay good money for a good experience. Sod the MCC bulls**t and just lap up the sim time. Excellent fun.