If you like riding park, but also like freeriding the contact pro is perfect. Super lightweight, forgiving enough for park, soft enough for a surfy feel in p0w but stiff enough to handle free riding.
The Union binding ratchets don't slip at all, in fact, some people have an issue with them being harder to take off than other bindings. Which, isn't a big deal at all, and is pretty comforting if you ask me.
Atlas is my favorite binding ever though, give that a look as well.
The Atlas is pretty stiff though, right? And when it comes down to it..how big of a difference does the stiffness make? Its more rider, right?