I highly recommend the ARB deflators. It allows you to read the actual pressure. The staun and similar units depend on the atmospheric pressure to regulate what's in the tire. If you change altitude, you'll get different amounts of air in your tire. For example, I initially had Staun and set it at home (5500 ft) to 15 psi for my Jeep. When I got to the mountains (approx. 11,000 ft) they let the pressure down to about 8 psi. Back home, they again set the pressure to about 15. If you always change the pressure at the same altitude (you house?) they're fine. Otherwise, go with the ARB. They're much faster because the lock onto the valve stem, then actually pull the valve stem out to release the air. One the desired pressure is reached, just turn the knob and the valve stem is reinserted. Very quick and easy.
Just curious about the ride. I notice that you have a Ram. I have a 2012 GMC 4x4 dually and the ride is fine with 70psi - no need top reduce the pressure when the camper is off. Think its a difference in the spring rates? we have a 3/4 ton Ram at work, and its a lot rougher riding than my GMC. Maybe Ram is just stiffer? How does Ford ride with full pressure in the tires?