In my experience, the best wood that I've used to heat my home with is the wood that's easiest to cut, haul home, and split. When I started to heat with wood, I cut down quite a few "yard trees" as a favor to friends and family. I did get some good wood that way, but when you couple that with stressing about putting the tree on the ground without hitting a building or crushing the rose bushes, and feeling like you've got to clean up all of the limbs, it's not worth it. Cutting standing dead wood from a woodlot where all you have to do is drop it, cut it up, and stack it in the truck, that's the bees knees. I've burned all kinds of wood, but I've never felt like the difference in heat value made as much difference to me as the time/energy/stress it takes from tree to stove.