At my first dive center, people swore by Aqualung stratos-1(full foot), they have weird sizing although. I remember, some staff used them for seasons together, even in current 2-3 knots. Personally, my size was a issue and I landed up with blisters a lot of the times with those so I used Mares Avantti Quattro- amazing fins but they were super heavy. Aqualung came out with a stratos 3 (also full foot) which fit me perfectly, since then I have been very happy with the propulsion. I travel with them wherever I go, quite lightweight and yet they give me the power I need, in all situations. The blade is perfect stiffness for me, but this might not be the case for everyone.
In my experience, I would say try out what works for you best, we each have different strength generated by our kicks which varies by the length of the kick, leg strength, possibly the wave, oscillation etc, and maybe various other factors too..Some say- Strong legs would do better with a stiff blade, and weaker ones need more flexible fins.
The gull's, for most they are overly flexible and personally I don't move with them but then some people really it. They sure feel good to touch
If you like a pair, stick with it
Edited by Samir.singh, 05 May 2019 - 02:12 PM.