Well I've never tried the Edition XS but I have used the set they were based off of, the Anandas for a quite a while. I thought they sounded amazing for music and gaming. The sound stage is where they really shine, it almost sounds like you don't even have headphones on, it's more like you're sitting in a room with speakers paced about 5 feet to the sides of you producing not only a spaciousness on the x axis but the y and z as well, basically it adds an incredible 3d realism to everything you listen to. The bass response is really rich and detailed, it can be eq'd to 6+db and still retains detail and doesn't get muddy, mids and vocals are very clear and forward, meanwhile the highs are brilliant and sharp, not as sharp as some sets like the Senhiessser HD800s, but still a brilliant treble range.

I hope this helps you with your decision, I know it's not the exact pair of headphones but they are very similar. Happy holidays!