Post paid prepaid is fine
BSNL prepaid has special recharge plans such as
300 min. local/std @135
365 min. local/std @159
Validity – 1 month
Check whether these plans are available in your circle or not.
It depends where u use…if in home then use any network which provide calla at less rate in ur state….like i use uninor…
But if u travel daily while working and have to get calls or make it…then u should have operator with great network otherwise call drops