My most abused Spydie is a Byrd Wings. Poor thing does not like.
Not that I abuse my tools regularly because if an SE Spydie looks like it can't do I step up to a chainsaw. When things get out of the scope of my EDC Cento 4 it becomes the job of a real wood chisel.
If I were to choose from my limited collection for hard use bordering on abuse it would be the M4 Ti Millie, probably followed by the Vallotton.