All modern V8's are meant to "scream" I guess, or at least need RPM's to develop their power so if you're going to tow in anything but flat land, it might pop down into 2nd or 3rd at times depending on the incline and your speed. It's something to consider if you're really bothered by a revving engine. However, if it's that bad, maybe consider an Ecodiesel RAM or possibly EcoBoost Ford. Both reach peak power and torque at a much lower RPM so you might not get the screaming engine issue. The Ecodiesel will give you great mileage towing or not. It just won't win any drag races at 240 HP. I see lots of them around here towing or not so people must be happy with them.