All of them that you mentioned are good, except for the STH make sure it's the STH Driver.. that way it'll be metal (more durability). As for the Pivots, they're great except the Rossi FKS are the same thing so whichever is cheaper get it (or if they're the same then it's just green vs orange).
which ever is cheapest, but if you have the money, and if you need an 18 din binding, then get the FKS or Pivots. The entire thing is metal and will not break for a LONG time. And they're very safe
A 14 DIN binding should be a good suit for you, it will accommodate your current DIN, whilst still giving you some space to run your DIN higher in the future. If I were you, I'd take a look at the Pivot14/FKS140, STH14 Driver or STH2 14 (replaces old STH for 2013/2014) and the Peak15 multiple rebrands from Head, 4FRNT, Amplid and Liberty.