I have been using Vodafone 3G for the last 2-3 months, before this I was using airtel 3G which was good but at the same time costly bit since vodafone 3G has launched in my area I am using it.
It cost me around Rs.8 for 100 MB 3G and the most important thing is its validity whuch is 24 hr from plan activation unlike other operators in which plan expires at 12: 00 midnight for per day plan no matter when you have activated it.
I get around 700-800 KBps on an average on my phone which is quite fast .
I love to surf internet on Vodafone 3G because of its service & affordability and I would recommed it as long as it has cheap daily 3G plan and also want to say that atleast you should try it.
Thank you