I have the EMS-PT50C and I'm so paranoid about shore power issues that I have a second one still in the box as a spare. I have seen way too many RV's damaged by power issues after 5 years of full time RV living. My EMS-PT50C has been in continuous service for 4 1/2 years and the spare will be put in service when the primary one has to go back to Progressive for warranty service.
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