I have put a good 40K miles on my Jay Flight 26BH. It's even experienced a few stop-your-heart emergency stops (once, on a two lane road in Nevada, going down the side of a mountain on a dark, rainy night, I almost ran into a small herd of black angus cattle, which I couldn't see until I was VERY close!), and it's holding up well. It's travelled down some rough roads, been stuck on a muddy dirt road, driven over a few curbs, and even had a minor collision at the top with a concrete picnic table roof.
It's been pounded with hailstones and drenched in deluges of horizontal rain, blanketed with deep snow, blasted with barrages of blowing sand and dust, and seared in the summer sun.
I've worn one set of tires down to the steel belts and am in the process of wearing out the second set.
No problems with the water heater, air conditioning or furnace, although I did replace the stock thermostat with a digital (the Coleman-Mach thermo did do some strange things at times). The water pump had a problem running when it shouldn't, but I think it was a dirt particle holding the check valve open slightly. It's since repaired itself.
I did have to replace the toilet fresh water shutoff valve after two years of use. It started leaking a bit when it should have been shut off. Luckily I caught it before it overflowed the bowl and flooded the floor. The blade seal at the bottom of the bowl has leaked a couple of times, but a little cleaning has always fixed it.
Because of my inattention, the awning has a small rip along the top where it attaches to the trailer- I left it extended during some strong winds- but I can fix that problem with some tough flexible material and a heavy duty sewing kit.
Currently, I'm parked at a full hookup rv park, and probably will be doing this for a while. In the past it was mostly boondocking in the Northwest forests or the Arizona deserts. My generator got a good workout.
Overall, my TT has seen some hard use, over the last three years, and still seems very solid. I don't see why it wouldn't last another 10 years or more, easily.
2011 Dodge Ram 1500 HEMI Quad Cab
2011 Jay Flight 26BH