Paul, Yes Teton closed around 2008. But, they had a very strong frame, and were quality made units. There are a few out there to be had at a pretty reasonable price.
I'll use this as an example of the Teton frame (apparent) strength. We have Big Foot Leveling system. Or unit weighs in at around 20K ready to go. We only have 4 jacks! Not the six jacks that many units have. Two on the front corners and two, just behind the trailing axle tires. When leveling We do not have any frame flexing. No creeking,cracking or groaning.... So it seems pretty stiff!
We tow a single axle 12' trailer. I don't know the tongue weight, but it's pretty heavy when we are headed out hunting. A 55 gallon drum of water and a 50 gallon propane tank on the bed front, and a Polaris Ranger(with a little other gear) centered over axle as best possible! So far, we've seen no I'll effects. Best of luck in your endeavor! memtb
