I opt this particular network i.e. VODAFONE because I personally use it. There are many pros and cons of using this network. I like this network because the signal strenght is the best everywhere. The new 4G has come up.
The signal strength of this provider is everywhere even where other network like airtel, tata-docomo, etc run out of service. As I said before there are also cons of using this network. The pricing of the paln is too high than any other network.