I am using this software since 2012 with my first android phone Samsung Galaxy S Advanced. This software was recommended to me by one of my friend. Since then I am still using this software with my every new handset.
Best features:-
Very good speed.
Plays almost all kind of videos.
You can Zoom your running videos anytime.
Supports almost every basic android phones.
Hence, recommending for all. Enjoy your android with Mx Player.