For any dish you have to make or choose your packs first.
As of now I used both of them and found that Airtel Digital TV is better than tata sky as there is some lag in tata sky.
I along with two friends booked tata sky, I choose yearly pack and my friends selected monthly pack and selected the same pack. Now they are paying five hundred thirty including High Definition Fee and I am paying five hundred fifty five for the same same pack and when I contacted I didn’t get the any convincing reply from them. So If you are looking for a Dish TV, I advice you to go with the Airtel Dish TV.