I have been using aircel since past 5 years. Aircel has pretty good 3g plans but other than that it sucks. I use this as a secondary sim. Hardly the network is found but when the network is their the 3g speeds are impressive.
Use this sim only for 3g and never ever put any balance or talktime for they will get deducted in the name of those aircel ad webpages and you will get subscribed to some nonsensevideo talkies and stuff