I just went through this with my Sammy and here is what i found...
I started with Buckshot wide mudders on a homemade SPOA. I found the ride to be brutal, the steering insensitive, and the MPG was about 19-21.
I switched to RRO jeep-eater YJ spring conversion with Old Man Emu springs under the axles thinking i would get a smooth controllable ride. But something was still off, the ride was still rough even though i could tell my axles were moving up and down much more smoothly. So i decided my tires might be too aggressive.
Now i do 98% of my driving on road and am about to start flat towing my Sammy 800 miles each way on camping trips several times a year, so on road feel is what i am looking for right now.
I shopped AT tires from Dayton, Cooper, and American(cooper rebadge). Cooper had a slick looking Severe terrain tire called the STT, but it was over 200 a tire istalled and had no mileage warrenty. Cooper also had a nice looking AT that i was about to get when i found a cheaper estimate on Dayton Timberline AT's.
Five Timberlines installed were 600 bucks even.
My ride quality is suddenly awesome, and my steering is tight, though off center because of my lift.... The softer road tires actually isolated so many of my squeeks and rattles that i was able to isolate the worst one, rusted tailgate hinges rattling, and fix it. My Sammy is more stable at road speeds, gets 3mpg better in all driving conditions, and handles rough roads without hopping around like a demented frog.
I realize im not going to get the off road traction of my old mudders, but to be brutally practical, i dont need it right now.
I assume the Cooper Discoverer AT would be similar, but in my area they are slightly more expensive, around 700 for 5 installed....