Well there service is not always as good as what moindear gets ,their down time depend on cable going over many houses,temperatures of their devices such as optical to rj45 convertors aka media convertors present at various locations.
Speed depends on the number of users sharing the same IP address,if you are external IP address is shared with many users the speed will drop,in congested areas expect a sustained speed 6.9mbps at best.
What these guys don't have is quality of service,they definetly are not as good as say BSNL in terms of quality of services ,they may give a higher speed at lower prices.
I have been using the service for nearly two months now and I get a constant 7.2 Mbps down and 2 Mbps up. No issues with the service either, any problem is usually resolved within half an hour of calling them. All in all, a fantastic offering.