If you want to have a reliable, high speed and a trouble free broadband network, then you should opt for Airtel Broadband. Although, airtel is a bit expensive than Hathway, MTNL and other providers, but it is worth that extra price. All I wanted was a good broadband network, having good connection quality and speed and I am completely satisfied by this. I am using this for the last 3 years and believe me I have not faced a single issue till date.
The connection is very reliable, there is no speed drop or abnormal network outage. Customer support is pretty good to. Have any query or any issue, just call them and they will resolve your problem in max 48 hours.
Getting the connection is pretty simple, just get in the necessary documents and call airtel. Customer service guy will come at your doorsteps and you will the connection in 3 days.
I will highly recommend Airtel Broadband to all broadband users.