I use BSNL FTTH. My plan is Fiber Basic Neo at ₹449+tax per month. It's a 50 Mbps plan. The speed is stable and I'm satisfied with the overall experience. Here, in my area the connection is provided by Keralavision LCO itself. 2 years back, I had to pay for modem and installation. But, BSNL now offers free modem and installation in rural areas. This offer would be available in your area only if the operator has opted that scheme from BSNL.