As stated, this is such a personal choice, there is no right answer. We have a smaller Class C and being small it is very maneuverable. Easy to drive around the towns and easy to park. The KOA at St Mary had a car rental service right in the park. We rented a car for the day there because RV's aren't allowed across the "Going To The Sun" road and we wanted to do that. After 2 cross country trips the only other time we rented a car was at Niagara Falls. Just to busy and tight there. I may change my mind eventually but for now running "light" (a RR term) is ok.