I have used MTS, Reliance and manyother datacards and settled at BSNL-I get value for money-Honest billing-Other service providers pose as they are having a good customer care units but they use it to confuse you and to extract the maximum from you-BSNL have no response Customer service but the system is honest-Manytimes the speed is frustrating-Considering the worst experience with other SPs, BSNL despite lacunae, the best