MudDog:As an aside question...can anyone say if the Atomic Split Fins are stiffer than the Bio Fins or how they compare...any preferences?
The Atomic split fins are much more stiffer than Biofins.
Atomics feel closer to traditional fins because of the stiffness, and thus give better fine control.
If you mainly use flutter kicks, I'd say stick to the newer fins. The Jets are outstanding for frog kicks, backward kicks, etc. but do require more effort than split fins, quattros, etc. when doing flutter kicks.