As I told you in my PM reply, they're not comparable. SF45 is more like the Targa while TT30 is more like the 390. Based on OP's weight, skill, riding style, the latter 2 options are the ones to consider.
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