I just put a set of Air Lift helper bags on my T.V. along with an onboard air compressor and I'm here to tell you that they are well worth the money. The actual install took about 2.5 hours, then another 1.5 to make everything hidden and all pretty like. Prior to the install my truck would sag about 2 inches with the trailer dry, now nothing. I hooked up after I finished set the bags to 75lbs and the aft end of my truck doesn't even look like there is anything on it. The air bags along with some after market tow mirrors, and we are ready for our cross country move this fall.