Oak is heavy and dense. It tends to check as well. It has a higher level of silicates which dull tools more quickly. It does take a nice finish. I haven't heard of any favorable acoustical characteristics for it though. Now black locust is something to think about. C.F. Martin did some interesting research on locust as an alternative to endangered rainforest products. It lacks beauty but has favorable weight/strength ratio and acoustically similar to mahogany. I have some in my shop waiting for me to make a guitar, someday. My real job is keeping me busy. **** those terrorists! hopefully some day soon we will have the OK to donate our product to the Katrina Relief effort for the detection of food/water borne pathogens as well as chemical toxins. The Gov't. won't take donations so a private group is clearing the way.
For Claude's benefit, I am invoking the famous Canadian 'notwithstanding clause'...
Notwithstanding the comments about Marc's recent work mentioned by other Braves below; I have a 1998 Acadian in 'C' that is a monster box. Having played a recent example of Marc's from late a 2005 production, I found little difference between them, other than the newer box is louder, required less bellows movement and seemed to have better button reponse with less pressure on the buttons.