I prefer the single rear wheel , dually is awesome but there are alot of down falls the 350 days out if the year your not towing , I just put 1400 miles on my crew cab long bed towing a 48ft flat bed goose neck with another dmax and a side by side on it , tows like a dream and have air bags so the rear spring capacity is the same or better than a 3500 and rides soft when i dont need the extra.
Couldn't have said that better myself Trent... The days your not towing a dually or 3500 would be pointless... 99% of the trucks out there put more miles on not towing then towing. With airbags you get the best of both worlds