I have been used this operator since six years. Network coverage is everywhere in India. Internet speed is awesome 2g like 3g and 3g like 4g. Nice cellular call qaulity without breaking voice. No call drop. Nice voice quality.
Their call rates are very costly but they provide quality service. Internet rates are very high. But yes idea is great idea. With good quality service and their customer service is also standard. Go for it. I would recommend if you want quality service