I think trios should be easy to find somewhere, then OMA monarch and Diesis in N.Y.
Devore and Altec will also be easy to find in the US
it's surprising how many things you find once you start looking for them. Till a year or so ago, listening to Vyger was impossible. I used to scour the forums to find someone who has had one. Now in a year not only do both General and Bill and Gian have it, I have ended up listening to it in 6 systems and will get to hear it hopefully in three more.
Same happened when I was looking for Apogees. I have now heard universums with most of the amps I wanted to. Heard devores with many, as well as other speakers, or TTs. Once you start looking for things they appear. And you usually end up meeting someone who is an expert at that particular thing and he leads you to other people do it gains momentum