Actually, even if Dish TV provides 5.1 sound on only Movies Now, the audio quality on the remaining HD channels is also pretty good though not in 5.1. With a home theatre set up, it still sounds very crisp and nice. PQ of the HD channels on Dish also beats other DTH providers. However the problem with Dish is with the set top box. It's rubbish. The software is outdated, looks cheap and the less said about the recording function the better. I have not used D2H, but as far as the DVR STB is concerned, Airtel is far better, second only to Tata Sky (TS has by far the best DVR in the industry but of course lacks in adequate number of HD channels).