Hard to beat the TCL 6 Series for the $. I have a Samsung Magnolia Series in my Living Room and it is very nice. In my winter home I did not want to spend as much and wanted Roku built in, so I bought a TCL 6 series with the aluminum frame. It was less than 1/2 of the cost of the Samsung and is as good, if not nicer, than the Samsung.
I really don't understand why anyone would spend $4-$10k for a TV when the difference in quality of picture is maybe 10% as compared to a "high end" cheaper brand. It's just TV and the technology changes about every 24 minutes.