AS I said, I have been using Neutron since I got my new HTC M8, also on previous Android devices, felt it was the better sounding (had also bought PowerAmp, uninstalled). My HTC came with a trial PlayerPro, tried it. My sense is that the Poweramp sounded best, next Neutron, next PlayerPro (strictly SQ-have uninstalled Neutron in the past for its UI, which was a headache). Not extensive listening, will try to get to compare some more