Best fin I’ve ever used by a long mile. They are a joy to dive with and I’d happily take mine to bed each night such is my love for them. I haven’t tried turtles or the Hollis F1s, which I’d like to try but in comparison to the other fins (both split and paddle) I’ve tried force fins, twin jets, quattros, and many others, Jet Fins just knock the socks of these others. Get these fins – you will never ever regret it.