Just did the Insignia, and the tv really does not look bad. Pretty good 120hz 42" for $699.
Since I could not get into the SM, I was stuck with grayscale the way it was, but I set light output, gamma, color and tint with the meter the best I could, as well as brightness and contrast. Best gamma I could get was 2.14, which is a tad low, but it is what it is.
Used Warm for color temp, and it still only yielded about 7500, but its better than normal or cool for sure.