Lightly used Pivot 18s in great condition. I had these on some Cham 2.0 117s. Great high DIN binding (8 - 18). 120 mm brake. I got some WTR boots so need WTR bindings. I work at a shop and can mount these to your skis at no cost to you (in Summit County, CO). A $25-$35 savings!
I don't ride the park but my friends who do say these are perfect for landing switch. The pivot heel doesn't slide back as almost all other bindings do thus reducing the likelihood of the toe of the boot sliding back and out of the toe piece on a switch landing.