My dear friends, I am using reliance mobile from past few years and it provides great standard service from starting. its call rate were very cheap and network service is very good. the 3g service is also awesome and its speed is good for easy watching youtube .
if you connect another device through wifi its speed is good and easily provide the same bandwith service on that particular device to work on internet .
only the problem is that it goes out of network zone sometimes which is irritating and at that point of time you start hating your operator.
if your connection is post paid then there is also an issue of billing, they charge some hidden charges of sending bill to your home. bill is also available on your mail account too, if you register.