I've got about 2 cords of each in separate piles. Both have been seasoned since last summer (2009). I know oak is good for heat output and ask burns real clean, but if you had a choice, which species would you use? I can mix the two, no problem, but wondering if there would be any benefit to using more of one then the other. They both look really dry, but I'll bet the ask is a bit drier then the oak.