Dish TV is one of the largest direct to home services provider in India. With 50 plus HD channels dishtv is dominating the market. HD channels experience is awesome but not satisfied with SD channels. Local dish wala can give you better SD channel clarity that dishtv. You can't view your HD channels in bad weather conditions. I do not know exactly whether this problem is persist with all service providers.
My main concern is its price, you can enjoy one month subscription as low as RS 100 but with limited channels. HD packs are too expensive. At present I am paying RS 440/- full on HD. So if you want to enjoy HD channels be ready to pay higher amount too.