I have been using Airtel postpaid and its myPlan in Gujarat telecom circle from last 7 months and I am pretty satisfied. I ported in from BSNL because of two main reason, its call drop problem over 3G networks and not friendly plan managing system(every-time I was supposed to go to the BSNL office for any change). My both problems were solved with Airtel and what I loved was its customized mode.
The only limitation is I can’t check how many minutes we have consumed. Internet Data usage, however, can be tracked, but don’t provide real time results. A bit more costly if compared to Reliance or Idea but they are not customizable. MyPlan can’t be customized through my Airtel Application.