I've listened to the BMR so long that it's become addictive. I cannot say what that guy was hearing with that particular BMR but it wasn't a Minx speaker. There is plenty of detail but the only thing that may be missing is the top end extension that you get with a good extended tweeter design such as a ribbon. I own a pair of speakers with ribbon tweeters and will say that I don't miss them. Lately, when I go and have a listen to other speaker designs, I can almost always hear the separate drivers.
I appreciate your opinion Jeff and value it more as a long-term owner more than I guy I suspect only listened to a BMR for a short time, if at all. And like you said, he was referring to PE's own BMR driver as opposed to the Minx so who can say how many differences there are between the model he listened to and a Minx?