Vodafone is the most powerful network in India. I have been using vodafone and tata docomo since long years. But I love vodafone because it has a very strong network. Vodafone is famous not only in India and also internationally. Also the schemes are very good. Tariff rates are high but You need to keep on check their special scheme on * 141#. Vodafone network is good even at the rural areas. When I go to my village I get the full network. Highly recommended.