I've owned several Riders Choice boards b/c they're awesome everywhere. I also rode the original Skate Banana for a full day. Both are soft enough to butter, although the SB is def softer. The RC is much better for all mountain though. Either one seems like it'll work for you. Since you already have a Custom, assuming you're keeping it, I think you're better off adding the Lib to your quiver.
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