Muse Thalia 9 is possibly the best overall single box player I have heard thus far. It has a wonderfully layered, spacious presentation and does a superb job rendering timbre and tonality. Highs are extended and free from any digital glare or harsh anomolies. Its pace is tuneful and rythmic, thus making all sorts of music a pleasure to listen to.
I have heard the CDS II w/XPS power supply (also heard the CD5 and CDX) and feel its an incredible player that does everything extraordinarily well but at its price point it should do it all and from what I heard I think it has accomplished this for the most part. My budget does not allow me to get into a player of that magnetude, so I opted for the Muse.
I've had no qualms with this player, it does so much so well, it is hard to pick faults with it.
I believe you might be as thrilled with this player as I am and believe it would fare well against any high end one box contender available at this time.