yes I have seen them. I worked at a sears, so I have messed with all the settings and stuff. Personally, I prefer the Samsung. There were a few quirks with the mitsubishi that I just couldn't stand. I don't know if these were just a one unit flaw but they were definitely internal problems. For instance, MAJOR green push, I had to use their "perfect color" system to tone down the greens otherwise underwater scenes looked like they had algae in what was supposed to be crystal clear blue water.
The second flaw is thay my settings would be reset each time the TV was turned off.
Lastly, I couldn't even edit the color settings without going in and turning the "auto" setting off then back on...then off again. After doing that it would allow me to actually see colors changing as I edited them
Sure, these problems are are inter-related. But they annoyed me so much that I would be worried if I was going to buy a TV from them, even if they had fixed them.
Granted, their picture is quite good once calibrated, if you are able to...