I have been using this from the past one year and I am very satisfied with airtel but I really do think this is over-priced for the speed . If you are a guy who gives more importance to consistency and reliability and ready to pay a few bucks extra for them then u wont find a better provider.The customer care is also very friendly and helpful but always keep the local technician number for a faster service.
Installation is also time taking but its worth the wait.
P.S. Always check the bills thoroughly as airtel has the habit of including imaginary charges.