I was using vodafone from the last five years.Day by day there are decreasing their service.Then I choose airtel service .Very good service, in each and every aspect . For postpaid lovers they offer packs, in which you can get the the things what you like.
Example I have take 199 pack in which you can take 6 packs of 100 min STD, 90 Min local calls, 250 MB GB like this.And you can more than one.Recommended.Speed wise it is also good.