It’s worth noting, repeatedly, that the type of tweeter and the quality of implementation are NOT at all the same. Nor is the price necessarily.
While I am very happy with my AMT’s, I’ve been very unhappy listening to others as well, so always listen for yourself as both the quality of the tweeter, the overall system design and your room and other gear matter.
The one attribute which AMTs have in common is low energy storage, so in that sense they are as good as the top end ceramic/Be/Diamond tweeters. However, the frequency response from model to model can vary a great deal.

