Buster doesn't produce anything that doesn't talk turkey. You'll be happy with any of them. I'd say get all three, and also a purple/green slate, and a crystal over carbon fiber.
Seriously, though, glass is gonna give you more diversity compared to the old hen than the red slate persimmon. Those Osage glass calls from him are incredible. I have a red slate persimmon from him, though, and I promise you want one.
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