I am looking for a GSM prepaid mobile service provider in Delhi NCR area. I already have a postpaid mobile connection. This prepaid mobile connection will serve as an alternate mobile no. For my work related activities. Which GSM mobile service will be best for prepaid connection in Delhi NCR area. Also, if I roam a lot in India, will that factor into which kind of prepaid service I get?Right now, I'm not sure if I'll be making a lot of outgoing calls with this number.