Mx player is very easy to use and very smaill in size. User interface is also cool.
Their are many many swipe features which is just awesome. Forward and backward, volume up and volume down, brightness. Which I personally like and use MX player from past 5-6 years.
I love black theme and their are many color option too in theme.
Audio player feature is hidden under setting but it is also a good feature because of this it is very easy to access you video and audios at same place.
One of the most powerful feature which I like is background play and its apply on videos to which is awesome.
Over all a complete package of entertainment.