Getting good things at cheap rates is quite impossible these days, but with reliance mobile operator, it is possible. The calling and sms charges are quite amazingly less. I have used reliance when I was staying in Siliguri and the network coverage was great.
Their net connection too was amazing. The only disappointment was, when travelling to remote areas of West Bengal and Sikkim, the network wouldn’t be there at all. So besides that, rest all was great with reliance.