I'm in the market for a binding and need a high din (I keep it between 12-13) and something that is durable (I've broken 3 previous pairs of bindings). I would have otherwise just purchased the Pivot 18s, if it wasn't for a recent incident regarding a cracked toe piece on my FKS 180s. I've found the Pivots and the STH steel in the $310 range and the STH2 around $240. All things considered, is it worth forking out an extra $70 for the all steel bindings or is the STH2 just as durable? Any other recs?