I've now tried a number of these audio players, Foobar, Musicbee, album player, pureplayer, jie extreme, aimp 3.5, pot player, I've gone through most of them now.
I'm beginning to come to the conclusion some mild form of trickery is going on here. It's like a CD player should output 2.2v but some output 2.4v, the end result on listening is the CD player outputting 2.4v will sound more impressive. Now trying these players, the better sounding ones seem to me to be slightly louder.
One first listens I like the Jie Extreme, but as I and other have pointed out it's way to limited, fussy and demanding, it takes about 15 seconds to load a song, wont play next song, and now it seems no uninstall, bad.
Pureplayer again is nice, that is as long as your music collection is local, if on a network it is a chore to load to player, Wasapi out wont work, not there is any real difference here. Sound wise it is very good.
I've just tried the Album Player from Russia, this thing at least works, plays wav, Flac, and music on your network, sound good to if a bit inconvienent.
But for ease of use, plays without a problem, looks goods, doesn't sound much worse when volume is leveled I would have to say musicbee is the best all rounder.