I owned an Ayon CD1 SC - and I LOVED it! Great detail, transparency and build.
I wanted to purchase the SET Ayon mono blocks - and had to deal with the only dealer in the USA. After exchanging emails and phone discussions, it was clear tp me that the Ayon dealership in the USA is run by a jerk. Unfortunately, the salesman I was dealing with was not truthful and lacked interpersonal skills.
I called on my old friend, Anthony of Perrotta Consulting to see if I could order the Ayon through him. Anthony is a perpetual nice guy and so easy to deal with. Anyway, Anthony told me he will not deal with Ayon any longer - citing issues with defects and also referencing the difficulties in dealing with the owner...he called him a Richard (read Dick) as I recall :)
Ayon International would not respond to any of my emails - so I gave up. Bad reputation + poor support = Bad customer experience.
Paul