If you want to know about Amphion vs. Zu, call Walter Swanbon at Fidelis AV in New Hampshire. He has a pair of Druids and he carries Amphion, or at least did.
Amphion and Dali, which I've heard, are good speakers if compared to the realm of conventional dynamic speakers with crossovers. The first thing the incoming signal hits is a resistor-capacitor-coil network, and until you hear a speaker that eliminates that while avoiding the shout and atonality of most other high-efficiency full-range speakers, the claims of us Zu owners might seem abstract. If you had all three speakers sequentially, Zu Druids last, odds are you could never go back to Dali, Amphion or anything else like them.
I've been a fully verifiable person for almost 52 years. My Mom thought I was verifiable when I was fighting my way into this world, and I'v been able to make my impressions along the way since, to become verifiable to others. I also have long-standing audio industry friendships from some time I put into the industry 30 years ago. So I not only hear about a LOT of gear, I actually hear it.
I own Druids and Defintions and that was after hearing various Amphions and Dalis and lots of other speakers in a 5 year investigation of what my next step should be.
Now, it's certainly possible for someone, perhaps even you, to hear Zu speakers and not think much of them. But I've never actually seen, touched, smelled or heard such a person in any verifiable way. That said, anytime two people are listening to the same music, the commentary inevitably leads to moments of wonder (as in consternation) about the other person's ears.
Phil