OP: I built all my front speakers. My L and R use mid-sized Mundort AMT’s which while I like have more than doubled in price when I bought them and the were expensive then! There are many excellent tweeters at 1/8th the cost.
I have come to the conclusion that overall we spend too much money on tweeters , and they occupy too much of our headspace. Even among this brand, which is still used by very expensive manufacturers, Mundorf makes some tweeters with resonances that need to be carefully handled. That a speaker uses this same model, or brand of tweeter does not immediately buy a recommendation from me.

