No problem , Ozy. I believe Durawood might be an impregnated laminate, while Ash is a solid piece of wood stained to the desired color. The Ash can be had in brown or grey...
The Lee TD Hunter has the most comfortable grip I've yet found. It's thin with just the right amount of palm swell. Really contributes to it's shootability.
You'll notice I wrap my grip with ultra thin sports wrap (used to re-wrap tennis and raquetball raquet handles). Makes for a sure grip when it's damp out or my bow hand is sweaty... :D