? much help will 3/4 ton make for ride quality comp to 1/2?

Weight calculations aside...

I installed extra leaf springs in the back of my 1/2 ton to stiffen the ride a little bit and it made a huge difference. Running empty the truck is a lot rougher ride, but when loaded / towing it has been great. Most of the bounce between the truck and trailer are now gone.

So I agree that a 3/4 ton with a stiffer suspension then your 1/2 ton will make a big ride difference (in a good way while towing)