Interesting ... not one "Tech Talk Jong". Good discussion on Markers. I have a wonderful scar on my Right shoulder thanks to a Marker pre release and resulting anterior sub luxation and rotator injury. That was on stock twin cam M51's. Even with that issue binding the green spring or race stock bindings did not have twin cam or, as mentioned upward release. The current Marker toes seem to be considerably less prone to pre release. Still, I prefer Salomon S 914 or 916's.