Currently I'm a customer of this mobile operator.
First when I bought this sim, I thought that the services are expensive but later on they started giving me special offers on call rates, Internet packages and roaming charges.
There is no call drop in this network and you will get full network in villages and remote areas also.
First of all, I will tell you that Vodafone Internet is much stable than Airtel. Airtel having good speed but not stable connection that is sometimes speed varies.
In Vodafone I'm having reasonable call rates
Vodafone to Vodafone 10 Paisa per minute
Vodafone to other 30 paisa per minute.
I'm getting 1GB 4G at 147 rupees.
And one more if you are out of mobile balance they will give you a emergency talk time of 25 rupees valid for 48 hours.
I will recommend Vodafone to others.