While the list above no doubt includes many fine examples, I saw nothing that really spoke to me. That might be a different conclusion based on actual listening!! The only Euro brand on that list I might consider is Karma. Posing my original question was not based on dissatisfaction with my current Lamm/Wilson setup. In a few years I'll consider moving to the Alexx v2 assuming that speaker happens; I confess to being very happy with their service and support. In the meantime I'm focusing more on improving my front-end electronics though I don't want to go into that here.
So no real insights from me, but thanks for asking. I envy your ability to travel as you have.
Thanks for the update. Perhaps at Axpona you can hear some of these brands. I have to say, Avantgarde, Stenheim, and Devore all have excellent service and support from my experience.