Francone...I can vouch for the shark, I went from the Viper 80 to the 145L shark and had no problems with the volume change. I was about 100kg at the time and could uphaul with no issue, and with a big fin this board has no problems going up wind. By the end of the first season on the 145 shark I was fully plainning, foot steering and gybes and switched to a 120L board....Highly recommended.
(By the way I know where you can pick up one of last years models in good nick and for $1000

)
cheers.