I just bought a few things for my truck in the signature, a PXRB Pacbrake, a Quadzilla Commander (guages) and a set of air bags for the rear. I was looking at getting a mild power box. I was thinking about a Smarty, but I would like to have some on the fly adjustability (just my nature, wanna play with stuff). I looked at the Quadzilla XZT and the XZillaraider (in both versions). I mainly use my truck for commuting to work, and pulling my Jeep and Toy Hauler. Nothing really crazy, I don't race, or have plans to. I would like to get some more mileage, but wouldn't care if I didn't gain any (get 19-20 pretty regularly). The XZT seems pretty inexpensive and with the Commander I would be able to use o-20-40-60HP modes. The Xzillaraider is a nice box too and wold gladdly spend the money if it would be a good towing box also, and the race version has power up to 140HP. I also plan on getting the Cool Blue Hose, and DPP air intake. Any information on any of these would be greatly appreciated. Scotty