Very simple bro
Tata Sky is excellent in all aspects - Service, Quality and now in no. of chs too plus is cost effective too
People took Videocon majorly bcoz it was cheaper and had more chs. Now they r not cheap and are more costly than tata sky. Also their product quality is inferior
Dish tv has max chs but then again they continuously had issues with broadcasters and customers lost trust in their service. Many chs were removed from packages be it from Star, Indiacast or UTV and even Sony. Having more chs us not enough, managing and providing good service is also as important.
Airtel is good but lacks HD chs. It has a strong SD customer base but in HD its behind. Now it has become most costly dth too. They r still good and people trust in their service but they need to add more HD chs and be cost effective.
So Tata Sky is the clear winner and perfect choice right now.