Does the demo version lower the quality compared to the paid for version? Because it definitely sounds compressed.
I think saying isone lowers the quality to like low quality youtube videos is over the top. When I first tried isone it gave me the wow factor and comparing it again later it still has the quality.
Anyway l've been trying other plugins and players and one I just come across that works with the plugins I like is qmp media player "Quintessential Media Player". I tried winamp but it was too buggy.. Two plugins worth trying out if you want to get spacious out of head experience is "Sheppi free spatial enhancer" I'm trying it with "headplug". The other worth checking out is Wavesurround with setting "stereo to headphones". Cool eq I'm using is "Electi-Q".