I am using Airtel broadband since 2 years, and I have no complaint regarding their internet service. It has good internet speed, if you choose a good plan then Airtel will provide you their best services as they can. And in India I would like say that Airtel has the best internet connections, compared to other internet service provider.
If you are using other internet service, I am not saying that stop using that service, but once try airtel internet, you will automatically stop using your other services.
-It has good Plans, you can choose whatever plan you want to choose.
-In less cost you will get more internet.
-Free calls.