I will try it if I can, but it'll probably be around January before I have time. I did try another GUI-less player a while back, to see if an extremely light player could yield better sound. I found that Foobar still sounded better. I was using ASIO4All in Foobar, which sounds better than most drivers and the new player was using WASAPI. I don't believe a player without a GUI is likely to sound much better than Foobar just because of that, since the GUI isn't doing anything but taking up a few hundred K of memory. Also, I find a player without a GUI to be rather worthless from a practical standpoint for people who enjoy listening to music.
However, I will say that passing judgement without using one's ears to do so is a waste of everyone's time. There are plenty of smart people on here, but I haven't come across any who have a complete understanding of the inner-workings of the universe, so who's to say how it sounds regardless of which methods, protocols, measurements, etc, are involved and why does it make any difference if all I need to do is listen to it to make up my mind?