Cressi sells two models of plastic freedive fins, the HF and the LD. The HF stands for “hard fin” and the LD stands for “long distance”. I originally tried the HF but as a beginner I found it too stiff. I should have switched to the LD but I tried the Riffe fin instead. I think the LD is probably the perfect starter fin. Its fin is soft and easier on the leg muscles and the cressi pocket is very comfortable, but I digress.
After using the riffe I swtiched back to the HF and I found it to be wonderful. Once my legs were used to using long fins they did not feel stiff at all, and the pocket is so much more comfortable for my feet then the riffe footpocket.
I have used these fins for several years now and have been pretty happy with them. The only thing is they don’t last forever. I know I don’t treat my gear as well as I should, so keep that in mind. But over time the cressis just break down from the sun and heavy use, kicking off the bottom etc. The blades eventually crack, at least for me. I keep using them even with cracks in them, but I am probably going to check out some other fins soon to see if I an get a little more life out of them.