"Wo wo wo wo sweet child o mine"
You say that word, "Beau Dock", or "Horseapple tree" or "Osage orange tree"....a 12 -incher will take the new edge off a sawchain. A skiptooth will bounce out of the cut in a heartbeat. Yewwood makes hella shillelaghs, if you're into that sort of thing.
If ironwood were more than a little scrub tree, it might be more fearsome to cut than boi d'arc, but it aint. Maybe a big smart pasture persimmon is harder to cut, but I never cut one, so I don't know.