Been looking at different models, would like to get a diesel pusher as I have a couple of diesel trucks and really like the torque.. I was thinking about a 35-40ft slightly used ( 6months-2 years) that someone bought but doesn't have time to use..like my last 2 boats I sold. My question is what chassis is better and is Cummins diesel the way to go, I have heard good things about Newmar--Mountain Air --any others comparable ?? Will spend up to $125,000 or so..Would like one that is user friendly as I will change oil-fluids & basic maintenance myself. My son used to sell RV's and told me that there is no such thing as a good one as he saw first hand all of the problems with them, and resale was always a problem since he had to convince bank to give a loan on deal and trade in value was less than a lot of people owed. he recommended staying at a hotel when we travel, only problem is we have pets and I don't trust motels etc to clean sheets etc.. plus having to stop for bathroom use etc is a pain as we get older. Is any particular brand better on resale than others as if we decide that Rv's are not for us we might want to unload. Thanks in advance for your thoughts on this..