The S-CRV has a more parallel straighter outline that helps with catching waves. The beveled rails are pushed more out towards the rail to give more wetted flat surface in the center of the board which makes it more stable when catching waves. The S-CRV can be ordered a little more narrow then some of the other models. Great choice for bigger waves. It also has a thinner tail that makes the board more responsive having your back foot closer to the the foil.