Tad, You can't beat the M&G. I mounts between your master cylinder and the vacuum chamber, and is simple to install. You must tie into the air brake line on the coach and once installed it is a simple quick disconnect air line to your tow car. M&G has reconditioned units guaranteed for 1 year, and will give you a credit toward another unit should you trade tow cars. What other company does that. I have it on 2 tow cars, Jeep Wrangler, and Jeep Grand Cherokee. I am considering a new 2011 Grand Cherokee, but have held off because I don't think M&G has a unit to fit the 2011. (that's how much I like the M&G)