It's worth taking a moment to really understand what the MCC course is and why the CAA have made it a compulsory requirement for multi crew or airline operations.
The MCC course is designed to be a transition course between flying an unsophisticated light aircraft in single pilot operations (and practically speaking within a purely training environment for most pilots as they complete their CPL) to being a useful and functioning member of a crew in an airliner on revenue flights.
To this end what you should be learning, practicing and demonstrating on an MCC course is an ability to not simply to fly AN aircraft. We know you can do that - that's what your licence tells us. An airline wants to see that you have understood that at the heart of flying an aircraft as a member of a crew is your ability to manage the work load, maintain situational awareness and practice making decisions. All this with in the context of a light deck crew.
To be able to do this you, the MCC course should give you an appreciation of, and facility to practice working as a team, being able to communicate effectively, and to be able to make sure that all members of the crew know what is going on now or in the future by being able to give an effective briefing.
Finally the MCC course looks at ways of developing your professional style, and practicing and demonstrating this while flying at speeds of 250kts or more. Being able to apply all this knowledge by using standard operating procedure and policies, check lists, as well as enhancing and developing your technical and operational knowlege is what the MCC course is all about.
Please don't confuse it with a JOC course as they are very different. An MCC course is a mandatory requirement (and with good reason) a JOC is a more in depth look at how a jet aircraft flies. There are many MCC providers to choose from and some are better than others.
Don't be "swayed" by doing your MCC course in a fancy aircraft. Don't worry, you'll get onto what ever aircraft floats your boat eventually! Go to the MCC provider that has a good reputation for providing you with the knowedge and ability to work as a competent and effective crew member as described above. And as you can see, the type of aircraft you completed it on matters little to an airline! It's what you learn on the MCC course that will set you apart form the rest at your interview.
Best of luck!