The purpose of MCC, as the name implies is Crew Co-ordination, therefore it makes no difference what aircraft type is used. Your main purpose is to learn how to integrate with other crew members and establish professional working relationhips where you can anticipate and respond to common events experienced while flying.
Generally instructors come from a varied background, but, most essentially, many have airline experience and are aware of the requirements of MCC as applied to airline environments. They are an invaluable source of experience and learning.
As for a school at a good price/value for money, I would recommend Multiflight in Leeds, they have a good approach and are supported by some pretty good instructors.
Malcomn Dean is your man;
www.multigflight.co.uk