I have switched from idea to Docomo due to non stop increase in the price of the rates of the packs of idea. And after comparing a lot and searching a lot about the best mobile operator I came to this decision. I found Docomo to be better after idea as it provides me following facilities.
Good Validity
Coverage at its best
Cheap Rates
Special Offers
Fixed price and low increase rate
Till yet I didnt found any negative point in Docomo.
These were the some points that I searched for and I found a best mobile operator for me and my family. I will suggess you to give it a try and see how your money remains in your pocket and in control.