I agree on the Red Oak. yesterday I decided to preview some of next year's Red Oak by burning some of the odd shaped stuff I put on top of the pile 2 years ago. I added 4 4"-5" square by 10" or 12" long splits NS on a nice bed of White Ask coals in the Fireview at about 10 am. The Red Oak was completely engulfed in flames in minutes. I engaged the cat and set the air at about .75 after 10 minutes or so. The stove top was at about 400

. It went up to nearly 600

in about 40 minutes and stayed over 500

for a couple hours. At 7pm, it was still at about 250

. All from 4 small splits! Gonna be nice and warm next winter.
For those who don't have the room to store Red Oak for 2 or 3 seasons, I recommend Black Locust. It burns about as hot and long as Red Oak and should season in one summer.
I also recommend splitting Black Locust a little smaller than other woods as it can be hard to get started if you aren't adding it to a well established bed of coals.