trying to decide Class A or Class C (super?)

First off I strongly advise against any Jayco product. That said the Super C units are on a medium duty truck chassis designed for freight. The turning radius is very poor compared to any class A unit. They typically have a long rear overhang which can be an issue as well. You have heat and noise from the engine and less usable space for a given wheelbase and length than a class A. Many new class A units have drop down front bunks negating even that difference. There are two major benefits to a super C: they can be easier to work on and since the engine is up front they cool better under heavy load. We had a C and now have an A. BTW I have a CDL and have driven trucks and buses for over 20 years.