Real, african, black ebony is rare and very expensive; I would check to make sure that the ebony is real and its more than a paper thin veneer.
I prefer maple as it is easier to "see" and much less common than rosewood. Some makers, like Phantom for example, won't even talk to you about a custom in maple.
My Fender USA Deluxe Ash Jazz Bass has the natural ash body, the maple neck, maple fretboard and head and the black pickguard and matches my '52 Tele- very old school.
All of my other basses - German Hofner, '65 VOX Cougar , & Fender Jaguar have rosewood fretboards.
As for sounding different? I wish I had that good an ear; between string choices, pickup choices, setups, amp varieties, equalizers, etc. it seems you can almost make any bass sound like another.
I like the suggestion of going with what looks the best to you. Of course, if you want that "road worn" look after a few decades of playing the same bass, go with maple.