have tried a 5.0m rs racing once. compared to my 5.0m 2008 vapor it did feel a bit heavier, maybe a bit more racier locked in feel.
upwind the n. pryde felt better, for reaching/downwind i liked the vapor more.
the cut of the neil pryde is lower at the foot. so maybe in larger swell/chop the vapor is the way to go.
could not be more happy with the performance of my vapor.