I have the B&W Companion and love it. It is easy to take in and out of the truck so you have a completely flat bed when the hitch isn't needed and it is easy to hook and unhook.
Works well for me.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof