TST 507 system here. I have had it for a bit over two years now and love it. It has saved me once so far, but I don't continually look in my mirrors expecting to see rubber and pieces of my 5'er flying all over the road now. I pay more attention to the road ahead and enjoy the ride more. I still look back, but not expecting to see a disaster.
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