OP:
Fritz used a very expensive and well-regarded Be Tweeter and it just wasn’t as good. It didn’t meld with the warm and laid back presentation of the rest of the system. His prior ring radiator model was IMHO the best up until that time. Butter smooth, warm, engaging.
The Be version said "I HAVE A BE TWEETER" very loudly. The ring radiator said "There are no speakers in this room."