Hi Mootje, thanks for the comments !!!
You do feel and hear a difference from each wood (although I think some people buy certain wood as much because of how they look, as how they sound). The African Blackwood and Pink Ivory are heavy but still quite flexible, the Brazilian Tulipwood is flexible but a bit lighter and the Kingwood and Cocobolo are heavy and stiff.
The different woods have different playing characteristics, which is really personal preference. The main two woods used for this style of thin tipper are Macassar Ebony (heavy but flexible) and Snakewood (heavy and stiff), so I'm trying to give players more of a choice and also introduce them to these beautiful woods.
Hope that answers your question, thanks again for the interest.
Cheers, Gordon