Fly N Dive
Contributor
i have the twin speeds and my dad has the twin jets, we both got certified in june/july 2001. when we bought fins i went with the speeds and he went with the jets. we had about the same size fins so we were able to try each others fins. i thought his jets were find if there was no current and there was no need to move quickly. when we were in coz last year we had to swim to the boat, not a great distance, but enough that he realized that it was much easier with the speeds. I have now outgrown my fins and am replacing them with a larger pair, and my dad is getting my old twin speeds.