I would think you'd want a softer flex for more flexibility. The nice thing about the new urethane backed bindings is that they're designed to still give you enough control for heel/toe carving.
18 Snoplanks Asym Fish . 18 Arbor Terrapin . 17 NS Maverix . 17 NS Twenty Five . 16 NS Swift - 14 TJ Brand Retro Fish
18 Rome Katana . 17 Burton Malavita Wing . 16 Burton Genesis X
16 Flow Talon