Thanks for your Reports
Although I thought my PQ was very good to begin with, I couldn't pass up Don's good price and have my set professionally calibrated. Don is a THX trained calibrator. He was very professional and answered all questions asked. Overall, I'd say that both color and depth of picture were improved over my combination eye-ball/settings from net calibrations (without going into the SM). But, be aware that because the TV doesn't have CMS, we had to sacrifice getting the best values for green and cyan in order to get the best values for all the other colors. Nonetheless, to my eye (which is pretty good, but not picky obsessive), my colors and skin tints are very good. I am very happy with the job that Don had done.
I also had my 65VT25 calibrated by Mike. He initially calibrated ISF Day and Night modes, then, following the installation of firmware 3.5, came back and also did THX mode. We generally only watch movies and TV shows at night, so we really only use the THX mode now. Having owned the display since November, I can really say that the set looks fantastic now. The colors are bang on and there is a noticeable depth to the overall picture.
I echo the comments above regarding Mike's professionalism and skills, and would certainly highly recommend him.