I have been a customer for almost 4 years intermittently. Having used similar services of Airtel, BSNL, I would highly recommend Hathway.
The consistent speed of connection, cost effectiveness, measurement of FUP and technical support have been excellent.
In fact, I was also impressed with the availability in adverse weather conditions, and when there was no power. I use a UPS system for my computer.
I recommend Hathway over all others.