Is that white oak curly or is that from the saw? The walnut and the oak should make great pens! Not sure about the ash, except maybe that middle piece where the color changes; that might look interesting. Well, and the middle of the bottom piece where the grain patterns come together. I'm still new at this, so forgive my ignorance, but won't the grain at the bottom left of the bottom piece be too broad for use in a pen?
Don't get me wrong, I'm not knocking the wood; they're all REALLY pretty! I'm just still trying to get a handle how how a board translates into a pen blank, and into a pen.