Charles1dad, to answer that, if you can, take a look at the posts I have made here on audiogon and see if you come to that conclusion.
I don't like being called 'petty' but it may well be that that is the case. But there is more going on here than just this thread. In email conversation Bill expressed pretty much the same as he did in his last post just above, and I agree with him that he is not beholden to anyone regarding his own opinion.
However, you have to think that something is amiss with this statement:
For example, OTL amps are not ideal with the Omen Defs (6 ohm)
-not having heard any of our larger amplifiers with the ZUs, larger amps that handle 6 ohms easily, the statement is simply incorrect. Now if he had said 'smaller OTL's,' I would have cut him some slack, but even then with a set of ZEROs *any* smaller OTL can manage a set of ZUs just fine.
Now I have steered people away from our amps when they have had incompatible speakers, since it would do no good to sell someone on something that does not work- you only make them angry and there is no point in that. What Bill is not telling you though is he has not sold anything of ours nor have we heard from him in well over a year. He used to be one of our more active dealers. Its been my experience that when a dealer goes from active to inactive that its not out of chance.
We have a good working relationship with ZU and have had their speakers in house. Their speakers have always been an effortless load for most of our amps, but given that they are so easy to drive, the question most people have is how our smallest amp, the S-30, will do on the speaker. With the 6 ohm models you use a set of ZEROs and it works fine. With the higher impedance speakers you hook it up directly.
Zu has also built the speakers with higher impedances- it might be that it is just for the S-30 but I think they are targeting other amplifiers as well.