I checked out some in person at COSTCO yesterday, researched more this am and ordered one:
$380 at COSTCO --
https://www.vizio.com/e43ud2.html The only bad comments I could find had to do with the remote not doing enough, full remote features being implemented via a phone/tablet app. I will only be using as a display, so none of that matters to me. I also found a comment about off-axis viewing. Again, not a problem for my application.
The physical size is almost exactly twice the height and width of the two displays I'm using now, so I'm expecting things to appear the same physical, but I'll have the equivalent of 4 of the same displays with no "seams".
I'm hoping this will solve the problem of no folders in CV