I have using aircel for last three years.this is a very good operator.Aircel is very good for talking and its network is good to be use in homes bit not in trains.when you are in a rail journey, the network does not comes on aircel.
But I say when you have to talk in local this is a great network.for local network use this service provides a lot of rate cutters and many tarrif plans.it has a very low rates plans.the very bad things about this operator is that it is very bad in net services.it does not provide 3G.