Bamboo is much more springy so I would think it would be better.
You might also consider tatami matting (which is rice straw matting and, in Japan anyway, it is about an inch thick) because it has much more "give" than wood. I assume you could get it somehow in California.
Login using the form on the top of the page to post feedback (if you are a registered user). If you have not yet registered, click here to do so. It's FREE!.
