Who is best gprs internet service provider in India. Looking for unlimited plans with more than 256 kbps speed?

Hi Friends, I want to go for gprs internet connection, my phone supports 520 kbps speed{down} & 210 kbps {up}, so who is best service provider with good speed & wide network in Hyd? I forgot to tell you one imp thing, this internet connection is for my laptop{I don't browse through cell}. Thanx for reading my query...