I am using TATA SKY for 3 years. It is the best DTH operators of India. Tata sky, has been proven usefull at all, bcoz of the excellent quality of signal. It has plenty of DTH offers with different facilities and prices.Even you can recharge your set-up box for one day only for Rs.8. Its services are also very well and quick. You can call them 24*7. They are also available online, by which you can recharge your set-up box with attractive offers.
There are showcase and active channels also available for the users.
It's first drawback is poor quality signal during rainy season, which is common to this DTH technology. And second is its price. It is very expensive, compared to other DTH operators. But due to best facilities and offers, this can be thought fine.