The old 916s are f**king bullet proof! Had a pairs for 10 years now and they work great, although look like crap (if you care). They stopped making them a while back but I've heard that they've been re-released (they may be a bit different now so don't quote me on that).
The more recent Salomon 16s (STH16s) were crap. Not so much because they weren't durable but because the wings on the toepiece constantly work loose and you end up carrying a pockettool/screwdriver everywhere to tighten them up
Look/Rossi Pivot 18s are bomber too and are my new favourite bindings (took 10 years to find something to beat the old 916s!).
I've had a pair of Rossi bindings (DIN 15, not sure the model name, maybe Free XXLs? ) with a one piece metal toe (bomber) but the back pieces were flimsy pieces of crap that flexed. I now have a pair of skis with these toe pieces up front and look pivot bits in the rear. I put the Rossi toe pieces up front as I broke a toepiece on my pivot 14s on my first day on them (they're not metal)! The toepieces were warrantied but I trust this hybrid setup more (even if it does look pretty ghetto).