Docomo has been rated for good pricing since ages now they have brought up many techniques for college students to buy their cards they do campaigns.
All such sort of stuff I personally brought docomo earlier for their good internet plans and I was happy with those even at times when the network was nice on 2g youtube videos would play f9.
Although I have brought a iphone 6s now and docomo doesnt not provide nano sim to prepaid customers I eventually had to port to other network bt docomo was good for pricing customer care is decent who cares they really dont exist for any company:P