I think you my be eliminating your first selection for TT a bit too quick, especially with the new truck and higher payload rating. Modern 1/2 tons properly equipped can tow a trailer that size with ease. As I have mentioned in other post on same topic, I doubt I would go much larger than what I have now but it's very similar is length and weight to what you are looking at. It tows wonderfully and have put almost 8K miles on it this year. The truck and trailer combo are comfortable enough that we have cranked out several 600 mile days when needed (when we're headed home, we're headed home!)
The limiting factor on my truck has actually been the hitch weight limit of 1150 lbs. not the payload at 2090.