I own a Fox Mountain 235RLS. So far after 7 months, over 4000 miles and close to 50 nights, we've only had one warranty issue (leaky fresh water fitting). That happened during the 1st week we had it. Since then it's been flawless.
All loaded up it weighs between 85-9000lbs. Pin is between 17-1800lbs. I tow it with a 12 Ram 2500 CTD with 3.73's. Average 10.5 mpg. IMO it's a perfect match.
We switched out the booth dinette for free standing chairs and table. also eventually we will switch out the rear sofa for recliners. We could of ordered it with rear recliners but didn't like them. So we will find ones we like better.
Big difference between the AF and FM lines is weight. Aside from typical upgrades between the two, the AF line will need 1 ton truck after you get past the 27-5L model.
Another nice thing about Northwood MFG is they will authorize any repairs at an RV repair facility if you don't have a Northwood dealer near you. We had our water leak fixed by an RV repair facility since we are 50-75 miles away from the nearest dealer.
I see you're from Oregon, so are we. So those mpg #'s are typical of where you would be towing. Hard to get anywhere without climbing something:)