My husband and I are trying to decide between a fifth wheel and a diesel class A motorhome. Of course with the high gas prices, mileage will be one of the deciding issues (if there is enough of a difference to count). So far we have heard from several different dealers MPG ranges that we should get or probably will get, but I would like to hear from people who actually own fifth wheels and diesel pushers. If we go with a fifth wheel we will get something in the range of the Ford F350 diesel truck to pull it. I understand there are a lot of factors that could come into play, I just want some estimates. Thanks for the help.