Every striker is different, it's not just the wood, just got to run till you find what fits you, there's some great suggestions on here. I prefer a Canarywood. Rosewood, Pink Ivory, Dymondwood, Wendge, Blackwood, King Wood, Purple heart or anything dense that has a good balance to it is a good starting place. After that it's up to your style. I'd also recommend practicing tightening and lostening the amount of pressure your putting on the striker with your hand and also adjust how much contact the striker has with your hand. Remember sound is vibration and the amount that the striker serface and pot vibrate control the sound you get. You can also manipulate the amount of pressure on the pot. When I want to get agressive and make the call really "Snap" I'll squeeze the pot a little. Just my $0.02.
