I have using tata sky for last 2 years and before this I used airtel but I found tata sky to be better one. The signal strenght is very good. The value of packs are cheap and they provide a no. Of channels in very less money. Tata sky have good visual quality and sound quality. They also provides offers on ocassions. The service it is also good and easy. The problem of costmer is solved very soon. Subscribing to tata sky is full worth of money.