So in doing research for replacement tweeters, I stumbled on CSS audio and there offerings. They have a 2 way kit for 549$ that is +1.5db - 0db. The little reviews I can find on them has them being the most uncolored speakers people have heard. They are not very efficient speakers so i can not see using them in a large space. But they look interesting for nearfield purposes. Especially if you are a mixer(I am not).
Anyways, I wanted to shine a light on the company as they have a couple really nice drivers with their tweeter and midwoofer.