I can say these things: -Control your humidity with ebony. You are, in my experience, correct that maple is a little more resilient with environment changes. Ebony gets the pokies relatively quickly -Ebony feels a lot like unfinished maple. Actually, "baked maple" fretboards and ebony feel really really similar. People who like rosewood might not like the slick feel of bends -My ebony fretboards have aged perfectly. I feel like they will last 500 years -Clear your mind of any thoughts about the "sound" of these materials. Do it. Clear. Your mind.