I've been using my sth 16s for 2 seasons now and they are holding up extremely well. The only rosignol bindings I can recommend are the fks. A few of my friends had the pivots and all of them have had issues.
Both bindings are pretty damn durable. Go for the Rossi FKS 140 over the Look Pivot 14. Its the same binding, except the Rossi one is more murdered out and looks much better.
you can't beat FKS. i demoed some skis yesterday with demo STH 14s at a free demo, came up kinda short on a hand drag, and sheered the heelpiece off of the plate.
I would just go with the pivots regardless. I have skied mine hard for a season and a half and they are still in good condition. No other binding has lasted me this long.
I bought the sth14's at the beginning of the season this year and went through four pairs of brakes. Seems that my brakes will fall off whenever my ski comes off landing switch.