I have Dish, TS and ADTV. It can be safely said that both PQ and AQ of tru HD channels is best in Dish TV even though they do not provide 5.1 Dolby sound. TS and ADTV have similar PQ and AQ for both SD and HD channels. Dish TV is let down by its poor quality USB recorder STB. TS HD+ is by far the best in class STB.