315/70R17 anyone? 4ply-8ply question

Thinking of running that size. Id like the smoothest possible ride and was curious does the weight of the tire itself factor into that? The Nitto Recon Grappler is a 4ply but weighs around 66lbs. The Toyo AT3 is an 8ply and weighs about the same. But wont it ride alot stiffer being an 8ply? If i want the best ride do i go with a 4 or 6ply instead of an 8? My only options are the Recon Grapplers 4ply, KO2 6ply, Yokohama X-AT 6ply, or Toyo AT3 8ply. Im not off road much. Just wanting to lift truck a couple inches and run a slightly larger tire. Just curious if any of u are running this size or have any suggestions as to which ishould go with for the smoothest possible ride?

 

i run the goodyear territory mt (the bronco tire) on mine with Rock Warrior wheels. not a full size 315/70 but lightweight and comfortable. got a set of 5 for $840 which will hold me over until i step up to 37s

they fit stock height no problem. have done well on multiple offroad adventures.