I have been using Airtel broadband for last 10 yrs. now. The plans and speed provided by them is extremely consistent and value for money.
What they promise is what you get. Some time back I shifted to BSNL but it was a total waste. Plans are extremely costly when compared to Airtel and the plans are also not according to present day needs. It seems that the plans what Bsnl is offering was made generations ago. Complete waste of money