I am thinking about purchasing a pair of fiberglass Captain Nemo power fins. I am not sure if I should go with stiffness 2 or 3. I am 200 lb and don't go much past 50'-60'. Also do a lot of surface swimming. My previous fins were Cressi Gara 3000s. I am purchasing the Nemos from http://www.freedivershop.com/waterway-captain-nemo-power-fins-fiberglass. There is an option to get 22 degree angled blades. Thanks for the help!