My step up is a full 6" longer than my so-called performance board. same width, slightly thicker but with more foiled tail. I like it being half a foot longer b/c I really notice the advantage when catching waves and take offs. Its also not too gunny of a shape which is key and keeps it fun in most of the waves I find myself on. Just great for those days you want to hunt down a peak, survive the drop, point and go and paddle back out quickly. I went years without using it, saving it for those really good days but recently I've been using it more and more when it gets overhead. The board turns as hard as I dare in overhead surf also.
Stretch and Murdey... very different shapers doing very different things... ha ha thats my quiver. Different shapes from them both with different intentions. But really impressed with them both.
http://www.murdeysurfboards.com/larold/ This is board I have on order, tweaked to my own OCD of course...