I have used aircel until last year and the service offered by them is worst.
I mean there will lot of disturbance in calls.
They provide offers in 3g but only 2g is accesible in our region of thanjavur.
And my origin is AP and when I go there, there will be no aircel network and I cannot find network in most of places and in some places vodafone can be used by aircel network.
So if u r a traveller then aircel doesnot suit u.