Docomo is the most economical internet provider but. Its network coverage is bad in areas out of the city.its speed is not same every time. The plans are nice but I believe that if it does not work at the right time and place than its of no use to anyone.would not recommend it to travelers.
Maybe good for some but on an average its not nice.3g speed is not fluent as it used to be. Maybe docomo is working on 4g network but that is not very cheap and still a person will look for cheap 3g plan.