I'm not one to describe sound the best BUT once heard you will know what I mean. They are super fast and detailed without being etched sounding. Yes they have a smaller sweet spot but then again most speakers do unless you go for omni's. Since 95% of the time we listen by ourselves that's not a concern for me.
Take a look at the review done by Robert Greene in TAS that gives a great explanation of the speaker.
Glad they will be at Axpona, enjoy!