I use both Neutron Player and Poweramp.
Neutron player is my favorite. It can be tweaked to play better sounds. And the built in amp is much more powerfull.
It plays louder music, specially via bluetooth and headphones.
Poweramp is easier to use.
It sounds good and I like the fact that it can have many custom pre sets.
But it has a volume cap.
If you like to listen to crystal clear music, the ability to tweak sound to the extreme and have super loud amp,
Neutron player is the best.
I have tried all.
DEV: HTC SENSATION 4G
Elegancia Sense 4.1 v3.0.0 CPU 1783 Mhz
DEV II: SAMSUNG Galaxy Note III
|ROM| Stock. Root de la Vega [KNOX 0x0 Root | SM-N900T]