A few days ago I shared my experience about my Iota Engineering ATS overheating and catching fire.  Now I need a new ATS and need advice from the forum on the best ATS available.   RV Masters in Houston gave me these three switches to consider: Parallax Power Supply ATS 503 --> http://www.parallaxpower.com/transfer-switch-50a-120-240v-ats503 --> $450 WFCO T57 -->  http://wfcoelectronics.com/product/wf-t-57/#tab-5b071284d5eeb --> $230 Progressive Dynamics PD52DCS