As owner of 6 different motorhomes, I would lean toward the person who suggested looking hard at a good, reliable Class C, large enough to tow either car or trailer, small enough to be economical whehter diesel or gas, prefeaably diesel. We had the biggest Class A on the road at 47' yes 47' although registered as 45' with DD 515 and a small Class B with Mercedes 5 cyl. No comparison in fuel mileage, 6 vs 21. Finally settled on Super C, larger than the Ford 450 or 550 both of which are appealing. Just saw a new one from Four Winds alonside a big Chevy Jayco Seneca. Now have 06 Dynamax with Cat engine because of fuel needs in Mexico where low sulphur is not yet in play and US ordered conversions to engines in 07. For your purposes, ask more questions, get more answers.