I have been using Tata Sky for about 3years now and we are satisfied with their service. The audio and video quality are good but they can be better.
On the other hand, I don’t find it value for money because other DTH providers give more channels in this price range like Videocon dth etc. But Tata is a reputed company and provides service all over India so you can give it a shot and see for yourself how good do you find it. I recharge tata sky daily recharge just only rs8 and enjoy when I want to watch tv more then 100 channel.