The Blur HD is a combination of the Flash and the S-CRV. It takes the best attributes of those two models to make the most high performance board to date. It has the pulled in outline and single nose concave of the Flash and the pushed out bevels and thinner tail of the S-CRV. It has a slightly different curve on the tail bevel which also helps lessen the foam volume of the tail. This model can also be ridden a little more narrow if you are looking for a lesser volume, quicker turning board.