I have been using airtel broadband connection for since last 2 months. Connection is good. Speed is good. But the data they have given me. It losses too fast. I have taken the plan of 120 GB a month for rs 1265 inclusive of all taxes. And my data usage is gone beyond 120 GB in just 8 day still it is working as this plan gives you unlimited data but the speed is went down to 512 kbps. Initially the speed was 16 Mbps.
So, opinion is that speed is good it gives me the speed of around 2MBps when my data not exceed 120 GB but their data got over so quickly.