Dougle Mcguire,
Scroggs is only voicing his (well informed) opinion on this matter.
When you have spent some time in this industry you will learn that an MCC course can only lay down some basic principles that have very little to do with actually flying aircraft. In fact MCC principles developed by the aviation industry are being applied to other areas such as "A&E" units in hospitals.
If the Tristar sim is only £400 more than an FNPTII generic sim then by all means go for the experience of a simulated L1011 operation but don’t think that the simulator has anything to do with the course. It all depends on the structure and the instructor.
Doing an MCC on a "heavy" won’t really help at all for a sim check because:
A/ They will expect a slightly higher standard from you (Or so I have been told from 2 "recruitment panel" Pilots from very large airlines)
and
B/ You shouldn’t be doing that much hand flying anyway.