If you have had a TT you probably have a truck to pull a TT. RV'ers average some 5000 miles per year so a motorhome spends most of it's life parked in a drive way or in a storage yard, same for a TT but your truck can be used for transportation and other uses. A Class C without a towed trailer or car is more maneuverable. We use our Class C for going to local events like airshows and day trips to local parks with our dogs. A class B , like a Road Trek can be used by a couple for camping and touring as well as for commuting. Class A's are similar to Class C's but may have less sleeping space for the same length. Class A's are popular with older couples having somewhat smoother ride. A lot depends on how you often and how you are going to use an RV and just plain what appeals to you.