I tried tones of music players for best music experience like Jet audio, Google play music, Double twist, N7 and whatnot but no one come closer to POWERAMP because of its super rich features and simple UI. it is easy to use. it has good library management, can play songs within folders, good set of Equalizer and Bass, Treble buttons.
But the most important feature is MUSIC FX which integrates with External Equalizer application.(I am using VIPER4ANDROID) not available on play store.google for it(REQUIRES ROOT USE AT OWN RISK) but I guarantee that both these works flawlessly you wont regret it and will take sound output to whole new level with Richer Bass and Treble, lots of EQ and settings.last but not least its Price is only 62Rs. It is the best Android Music Player.