Keep this in mind. The GM 2500 HD has an IFS front end under it. If you are complaining about the ride in this, you will not be happy with the ride in the SuperDuty. The SuperDuty has a solid axle set-up. For a 3/4 ton truck, you're probably not going to find a better ride. Remember, all 3/4, and 1 ton trucks used to have solid axles under them. I think you will find that it has a better ride then some other options you have. Also, you're looking at a work truck, not a Lincoln Town Car.
I think you're going in the right direction myself. Good luck.