Well let me take you another way. We just purchased a 2012 Winnebago class B+ at 28ft on the e450 chassis. We ended up buying a towd vehicle and if you don't have one plan on buying one and then the costs for the tow setup. For us it was easy as the guy we bought from gave us everything but the base plate for whatever vehicle. He towed a Mini Cooper we bought a new Hyundai Elantra as the used vehicles were generally going to cost as much and had bazillion miles on them.
We also have (had before the MH) a ford F350 and a 24 ft TT that we towed behind our old F250 gasser. Generally I prefer the TT as the truck is more comfortable than the Rv, but the wife like the ability to get up and go to the potty etc. I like the truck because it is way more comfortable and it really does not take much longer to set up than it does the RV. Oh I know everyone says pull in drop the jacks and you are done! But in reality you face the same leveling requirements for the Rv as the TT. I used a 1/2 in drive drill to raise lower the levelers on the trailer and setting up the sewer, electricity and water is a wash for both.
We found with the shorter TT we could get into places where you could not with bigger. One night we got to a campground that was full but they let us stay in park lot due to our TT size and we got a place the next day. the next Rv place was 80 miles away from where we wanted to be, thus when we looked for an RV 28-29 ft was the limit I set to get.
The best thing to do is rent a cl a and then a c and see which meets your wants. I don't want an A due to the sizes involved. I drive a school bus so don't want something that is just the same size as they are a PIA to drive in traffic and the class B is actually a little more aerodynamic than the A or C. We do not need all the beds as its just the 2 of us and the dinette will make into a bed if grand kids were ever to be involved (doubtful). Also the smaller size will allow for street parking. We spent some time visiting and a neighbor who was moving away from the area we were in said to park in his driveway and with the size we could. Could have backed the TT into drive if we had had it so we prefer the smaller size as indicated.
So as you can see there are pros cons to all. Only you can determine what is right, so if able go rent and try its cheaper than buying and finding out you don't like what ya got!
