I run a 3/4 ton GMC, my friend has a 1 ton. They are really pretty similar, but I notice the ride is better in the 3/4 ton when empty. No real difference pulling.
1 tons have heavier springs/shocks/brakes is really the only difference, If it’s going to be your daily driver as well, I would probably go with the 3/4 ton just because of the smoother ride when empty.
Licensing is the other thing to take into consideration. 1 ton is quite a bit cheaper, at least in MN.
Fuel mileage is a bit better in the 3/4 ton empty, but I think that’s just due to the 1 ton sitting a bit higher, towing they are pretty much the same.
More comes down to how much weight you plan to pull, over 16k gets to be the limits of 3/4 tons so if you think you’ll be pulling more than that you might as well pull the trigger on the 1 ton.