Obviously, a dually can handle more load; both on the pin and oftentimes behind the truck. 1 ton SRW trucks are commonly rated a couple of thousand lbs. less on the rear axle than a comparable DRW 1 ton truck. That is why we went from an F350 SRW to a dually.
Many here will also tell you they like the stability of the dually better. We had an F350 SRW and then bought an F450 dually. Pulling our Cyclone, I never had stability problems with either truck. The SRW truck pulled our big Cyclone through some wicked storms and it was as stable as what I have now. But that's just me.
