I can vouch for the product. Purchased pecan, red oak, and hickory from Dennis last weekend. I also found him on Craigslist. Dennis is a nice guy, very easy to find in JV, and easy to do business with. (edit: I wanted to add that Dennis is right near the Beltway, so it really is an easy drive from most places in the Harris County area)
I did brisket last weekend using Dennis' pecan, and it's good stuff. BTW, I have no affiliation with Dennis, and only met him once to buy wood. YMMV.