I have had both,Here are the benefits of the SRW,First option price,Than tire cost DRW tires wear out the same as the SRW because their are smaller with double the cost,If you do any off road use,landfills,etc the DWR tire cost will be SHOCKING,Next the rotating mass DRW,Has twice as much with the same ,travel,trans,axle,springs,brakes,engine, This means ride and mileage will be affected. The SRW will put trailers in spots the DRW could never manages. . The SRW handles much better in the winter months. also the SRW will pull more because of the extra rotating mass that will rob you of HP. Bed use the SRW bed is a lot more operator friendly.
DRW benefits,More weight in bed, More stable on dry pavement less on wet or snow. Looks different.