Agreed. The ZU’s are another really well thought of line of speakers. There is no way that I will ever be able to listen to more than a couple more sets in my home system in my lifetime but it is fun to think about and research.
I am in the process of gathering pieces for a “big” system in the basement but it will be some time before that comes to fruition.
Lately I have been looking at some “open baffle” array and line source speakers from GR Research. They are mostly sold as kits but I would probably pay them to finish, assemble, test, and ship complete as my cabinet making skills are zero. Both are explained in this video. He seems down to earth and very knowledgeable and a no BS kind of person. A lot like Eric in that respect.