Replying to Bindings$$$$$$money

So heres the deal. I was gonna get the p12 jibs and the other day I sprained my miniscus in my knee on the tramps. I dont ever wanna feel that scetchy shit again...so I have stls and im not sure if I should mount the new line bindings on them or not with their new plate....Im kinda scetched out about line bindings but if it can save a knee seems worth it. I dunno Im confused as hell. How do they compare to look? whatya guys think?