I am using idea sim for six years .I am really satisfied with this.It has good range where ever I goes.Now I have a smart phone and using 3G internet .Idea has good 3g coverage in my home and working place.
I used to watch my location in map when ever I travel to other places.I used to recharge internet fir more than 1 Gb every month, idea also gives me somany data offers and talktime offers.I prefer idea to people who wants to use mobile internet and wants good talktime .