Jim, you can't go wrong with the Monaco line, except when it comes to the Caymans. The Knight on up all use the 8 air bag system. Monaco tried a 4 air bag system on the Cayman and it's a ROUGH riding coach. Our friends have a 37' that I tried everything (within reason) to try and soften the ride. I made sure the ride height was correct, added Koni shocks and lowered the air in the tires to the minimum. It still knocks their clothes off the hook in the closets.
The Cayman also comes with the Cummins ISB 5.9 and smaller Allison trans. On almost every Cummins engine you can add some additional horsepower, except in the Cayman configuration. Since it has the smaller trans you can't increase the HP.
Lastly, the Caymans had a trailering arm issue (the two large arms that run from the frame to the rear end). They all eventually fail and are about a $3000.00 repair. They were a recall item, but Monaco went out of business before doing the recall.