I'm really allergic to those middle hands just adding misunderstanding, lies, delays and cost.
If you have a question, they either lie to you or forward the question to the maker, adding only delays and confusion.
You can easily visit any Highend On Tour event in Europe (mostly Germany, Switzerland or Belgium) to audition the Stabi M + 4Point. Next event is 2-3 Dec in Bochum.
I really don't think you will be much wiser from such an audition, but I understand you.
Both Stabi M and 4Point are such fine instruments that what is really needed is a lecture rather than an audition. Everything (almost) is clear from the manual, but to see it done by someone who knows the equipment is worth a lot.