I did my MCC with FSB and was very satisfied with them. Instructors mainly from Germania and Air Berlin were quite nice!
My perception is that some people think they are suppose to learn to fly another aircraft during a MCC course. It is all about working together in a multi pilot environment and the BE-200 will do the job absolutely fine.
I am on the B737 now and a lot of my colleagues did a 737 MCC course and said it didn't help them in the assessment as they had to do refresh all the skills again before assessment. So unless you are super lucky and have an assessment straight after your finish MCC I would not worry to much about what type of aircraft you are flying during MCC course. I would rather focus on the school and quality of the instructors.
Best of luck !