I recently started using Idea Prepaid 3G Internet Connection in Bihar. And it is providing a very good range and network to my surprise. I am very happy to switch to Idea and it is providing a very good Internet connection service.
The price is Rs. 248 for 1 GB but it is very fast. The plans are good and as an advertisement says "Get an Idea Sirjee", so those who are thinking of getting or changing their networks, they can on Idea Internet.
But I am not sure of their customer care currently which I will come to know in days to come.
Otherwise good network and good plans.