I have been using Airtel broadband for the last couple of years, the service quality has been amazing. The point of sale for the broadband connection(ADSL) was 8 Mbps and I used to get more than that. Then I upgraded to V-Fiber, the plan says that the internet speed might go up to 40 Mbps, I received a download speed of around 35 Mbps. The highest speed that I received was 37.4 Mbps and the lowest was around 33 Mbps. Reliability of the internet connection is high. Unlimited calls to any telephone/ mobile throughout India.
Overall, I would say that its the best broadband connection.