Edge, Gryphon and Xcal3 are some of the more popular but remember, when you add one of these you will get more power and that will be due to higher fuel consumption...added power and better economy are like oil and water.
The factory settings are about as efficient as you can get. Setting lean conditions can do more harm than good, due to increased combustion temps that can damage valves, O2 sensors, etc.I as well have the same crew cab 4wd. I have a 2.5 leveling kit on 18 inch rims with 33 inch tires and im running about 14 highway. problem is i mostly do city as i work right in the middle of the city. im not so much worried about losing a little bit of power because i do not tow that much until late in the hunting season with a 14 foot trailer. I was looking at the edge evolution cs gas programmer. Do you Know any details or have you heard anything on them?