For what it's worth, I listened to K-Horns, La Scala, and Cornwall speakers when I upgraded my system last year. I like how horn speakers reproduce music and I wanted to match them with tube amps. Out of the three, I preferred the La Scala speakers because the music was effortless. The Cornwall speakers do produce the "in your face" type of bass that is expected now. The La Scala bass is present, but it is more relaxed and not so energetic. I supplement my La Scala speakers with a Rythmik servo sub to provide more energy below 60hz. The servo provides nice distortion-less bass that matches the La Scala and tube combination wonderfully. As for the WAF, the La Scala has that mid-century design aesthetic that seems to be popular in home interiors.
@whart I am completely jealous of those beautiful Avant Garde horn speakers.