Personally I run the BullyDog Watch Dog gauge system and it works pretty well, granted its not designed for the Jeep but it definitely has accurate gauges available on it and multiple Aux inputs. Trying to set up my air tank pressure to the watch dog so i dont have to stop on the trail, get out and look in the back to check pressures right off my tank. Also has a nifty little 'driving coach' on it to help monitor fuel economy. Also has the ability to check/clear codes of the rig. Only downfall ive seen from it is the fact that it communicates through K-wire and not normal OBDII communication but like I said its not exactly made for the Jeeps.