The best thing about Airtel Broadband is that it does not stuck in the middle of something. The DSL light is always online 24* 7 and thats the thing I like about Airtel - Uninterrupted service.
Though there is caping on the plans i.e. the speed of the internet slows down after the user uses the allocate GB of data.
Airtel has been the best from past so many years, and still is.