I was looking at some options for adding overload protection. Bottom line is I'll always be in the garage when cutting, but I may not always have line of sight based on the setup of my garage. The stairs are in the middle and creates a C shape.
It seems most of the folks that have reported issues with fire had a HF unit so I will look at something a bit better. I also reached out to Wen and Grizzly. Grizzly as expected responded promptly and gave the codes they follow for specification, but have not paid to have the saw UL listed. Wen took about a week to respond and said the saw was ETL certified. I wonder if other manufactures just aren't adding certifications into the spec sheet now. It seems odd to me.
That makes Jet, General International, Wen, and Grizzly would likely be alright. Jet has the largest capability at 5" high as opposed to 4-4.5" for the rest. They are also the most expensive. It's hard to justify the $600-700 range when a Grizzly or Jet 4x6" mitering with downfeed control is $800-900.
I'm still looking for used saws and haven't found anything local. Can't cross state borders due to work regulations. (Well I could, but don't really want to pay to get COVID tested 3x afterwards if I could avoid it)