All of those are great options, although I'd replace the Omni with the Jam instead. The Omni is softer than the other 3 on your list. The Jam is stiffer and has a faster base.
16 Gnu Swallow Tail Carver . 16 NS West . 15 NS Snowtrooper BIA
16 Burton Genesis X . 15 Now Drive
16 Flow Talon . 14 Flow Hylite