Hi, I've heard the Muso in a (fairly) local hifi store, and have to say I was very impressed. The quality of the sound coming from a one-box system was surprising to say the least.
As I have mentioned on another thread, I'd happily have one as a second system. Just not convinced it can replace a "normal" hifi - but then I don't think that is what it's intended for....
Not heard the Ruark I'm afriad.