What is so hard to understand about my response to him? Whether he is in your country or not has little to do with my response. He said:
"Zellaton needs and deserves amplification of the highest quality offering sufficient power. The CTH-8550 is a nice integrated for sure, but I would suggest something more powerful with proper extension and drive."
Above he suggests that darTZeel is not of the "highest quality" and doesn't have the "proper extension and drive". Do you think if darTZeel was a brand he sold that he would say that?
He then goes on to push his own products:
"CH Precision and Ypsilon are both wonderful options where we've got great results here in Stockholm partnered with Zellaton Stage. Boulder is another alternative if you're looking for a highly neutral and powerful foundation."
His response was unprofessional and promoted / shilled his products.
You have missed my advice because I had not offered any. Had you asked me directly, I would have told you darTZeel is by far the most natural and realistic sound I have ever hear. While it may not be the answer for every speaker or every listener, I feel it is a singular voice in a very crowded world of electronics and I would build a system around darTZeel and not around a speaker.
In answer to your other question, yes, I have heard the Zellatons numerous times unfortunately not with darTZeel