I am using vodafone network since 2009. Initially I was very much satisfied with their services but after the introduction of 3G it became very costly for me. You have to pay 250 rupees for 1 GB 3G which is very high compared to other telecom services like docomo, Idea and uninore.
Call rates are also high. 2 paisa per second and to reduce call rates you have to pay 94 rupees every 28 days which is also high as other service provider give same facility in 40 to 50 rupees. I was thinking to go post paid but it cost also high. Now only option I have is Portability.