I use a hydraulic splitter for processing serious firewood for the house.
+1. Only way to fly. I use the hydraulic splitter to get the rounds down to reasonable sizes, then switch to a splitting axe to take the pieces down to stove size. Once I used a hydraulic splitter, I swore I'd never go back to a maul and wedges--particularly for splitting rounds with lots of knots in them, which we get quite a few of when taking down large fir trees.
