I pull a 6200 lb across the CAT scales 25 ft TT. I have an E-boost F-150 4x4 with the towing package.
It is a good match and we have towed in mountains and deserts. After 23,000 towing miles and an additional 40,000 day to day miles, I haven't have to replace the original tires and will have to replace the shocks.
Bigger is better but there is always a trade off between cost, maintenance and daily use.
While my rig combo works fine, anything bigger and I would recommend a bigger TV. Not for the power, but for the wear and tear.