Well we moved from a 40' two slides diesel pusher to a 31' C one slide. We spend from 120 to about 240 days out a year with at least three month together. Don't see much difference in driving either although the diesel has more systems to monitor going down the road. Had and do have a toad with both and the ford V10 does as well as most diesel A's. Have friends with a 30' A newer and they tow also we seem to be able to go the same places without much trouble if any. We camp/boondock in all kinds of weather and don't heat or cool the cab area now but even in the diesel never wanted for more heat or cooling. I really can't think of a thing that one or the other in the 30' range can't do. Sit in a few of each for a 1/2 hour and think about being on the road and get the floor plan that suits. Depending on brand some have better storage both in and under each not A or C. If I were to purchase new I would get either A or C with two slides rear bed and the best floor plan that Suited MY wants.
And as to the crash thing "nuff" said if you hit that hard in either your in deep poo, don't need the argument in this thread. JMO
LEN