Due to good network coverage I used Airtel network for 2-3 month, but I found that there charges are too high per same call, I was spending around 300 per month in Reliance GSM network, where as for the same use I need to spend around 450 in Airtel, and this is only good in the urban areas, there is no coverage at rural areas.
I will never going to use this network, as they commit and advertise that they are best in telecom industries, but this end with in their words not in the performance.