Dunno, I have my Galaxy Mini 2 and I don't really hear that much difference with Neutron. Not to mention it's resource heavy and its interface isn't that good.
Noozy, on the other hand, makes the sound good enough, at least for a backup player. It's also lighter and while I'm no fan of its UI either, there are fans of it and it's understandable. Now, I if someone would port the sound engine to PowerAmp or PlayerPro, it would be almost perfect for me...