I am having internet broadband connection of Airtel itself and I must say that there service plus technical support is best in India.
I met a problem in internet. I just gave them a call. what I see they come at my home in just few hours.
whereas ISP like BSNL take atleast 24 hours to process there request to resolve the problem.
the only problem arise when you data topup end. then you going to have the worst speed in this world.