Jim,
Brand buying is not the total answer, be it Everest, Cougar, Carriage or whoever, If you want new, go to an RV show many models you will be surprised are made by the same manufacturer and there are good show deals.
Go to a consgnment lot, there you will see many bargains - there are plenty of them.
Don't forget the wife's angle - the kitchen and the layout of the bedroom. Once you've got it, you're stuck with it.
There is no good reason why you should not go to a dealer. Used or new. If you don't like the spokesperson, tell him to take a hike. Look at used, there are thousands and you can save thousands. then you can put more money into the tow vehicle. But do one important thing - whatever you buy - take it for a test tow. New or used. Have someone follow to see if it is towing straight or even leaning suspiciously. Go for it, mate!
Paul D