Agrelon, good points, and close to my own experiences with the F122. It's true that the stiffness of WC provides a cleaner release thus earlier planning (beyond the weight)!
Bottom-line, if iS150 existed in WC then it would be able to plan btw 1-3 knots earlier than a more "soft" version - right? Would that also be the case for the iS144 in WC vrs. Wood versions?