I have been using visa postpaid since a year and every month they have a misc charges that are around 100 I don’t know for what they charge this amount.
Network is worst, it is hard to believe that visa network are different in all my rooms. One room has full tower and one room doesn’t show tower at all.
I would suggest you not to go for voda.
But if in your area connectivity is good then you may opt for voda but be aware of the misc charges.