I've never even seen a Muon, but I have heard the Blade (not the Blade 2) at a dealer and, oddly, a Porsche event. Apparently Porsche and KEF have some sort of lifestyle co-marketing agreement. Anyway, I was interested in the Blade originally because it is a point source, and I wondered how it would sound compared to my Salon2s. I like the Salon2s, a lot, but I'm always looking for something better (and an excuse to move the Salon2s into our HT system, ahem).
For most classical music, which has relatively limited spectrum below 32Hz, it was difficult for me to develop a preference for the KEF or the Revel. I never felt any sense of loss with the Blades. Overall, I thought the Blade was very, very good. The Blade was one of the few speakers I've ever heard that made cymbals sound as real as the Salon2. If there was sub-30Hz bass involved though, the Salon2 had an advantage that was apparent even on some well-recorded solo piano music. So I was impressed by the Blades, and thought that adding a couple of subs with the right system tuning would probably make the Salon2 and the Blade a real toss-up. Anyone who tells you they've heard better than the Blade 2 is either reacting to the bass response, or perhaps just trying to be difficult.