Airtel has been a huge name in the telecom market for few years. They are known to provide good services and they advertise their network too much.
However the realities are different, I have experienced poor coverage and expensive rates with their telecom services.
Their DTH service is no different. The signal strength is poor. Even on a day with clear skies, some of the channels wont broadcast.
Their plans are the most expensive ones probably. Tata sky feels worth the expensive prices but that is not the case with this one.