I have a 2006 Trailmanor, model 3124KS. It only weights 3,500 lbs. I pull it with a Forest River M B Cruiser class B motorhome. The motorhome is powered by a Mercedes 5 cylinder diesel that only has 154 hp. I pull it at the posted speed limit and average 17 miles per gallon.
The engineering in the TM is perfect. It takes 3 or 4 minutes to setup or take down. No canvas anywhere. All solid sided. The support from the factory is top notch. They are located Tennesse. I stopped by last year and had a tune up on the torsion bars. Before the tune up, it took two hand to open, now it takes only one.
I have owned 10 RV's in the last 30 years and this TM is one of the good ones. Remember that it is built light weight to pull easy. It does require tightning screws and regular maintenance stuff. I would not want to live in it full time, but it was OK living in it for 3 months while working Hurricane Ike in Galveston and 3 months working the ice storm in Kentucky a couple of years ago. With the temps in the low teens, it did take a extra small electric heater to stay cozy.
Now that I have bought a 40 Beaver diesel pusher, I will be selling the TM.
1999 Beaver Patriot Thunder