I'm a complete traditionalist when it comes to fins. Having started snorkelling back in the late 1950s, I've always been very happy with simple full-foot all-rubber fins. I still use such fins when I snorkel in the North Sea and I don't regard them only as "pool fins". It's often forgotten that the pioneers of freediving in the 1970s used all-rubber fins to great effect in the ocean as well as, presumably, in the swimming pool. The concept of "pool fins" is relatively new and can do a grave disservice to fins that have been, can still be, used perfectly satisfactorily in both environments.
Azapa is right that all-rubber fins can be hard to find these days, but they are still being made around the world and can be sourced if you know where to look. For what it's worth, and I don't know whether this may be what you have in mind, there are three models of all-rubber long-bladed fins:
1.
Adalilar Concorde. Turkish-made fin.
2.
Gull Barracuda. Japanese-made fin.
3.
SubGear Stream. Taiwanese-made fin.
The Japanese manufacturer Gull, which specialises in high-quality all-rubber fins, makes several kinds of standard-bladed fins of various stiffnesses to complement the Barracuda, for example the
Mew,
Soft Mew,
Hard Mew and
Supermew.
All-rubber fins continue to be popular, both in the sea and in the pool, in the Far East. They are still made in Brazil, China, France, Greece, Hong Kong, Hungary, Italy, Japan, Malaysia, Mexico, Russia, Taiwan, Turkey, Ukraine, Uruguay and the USA. They can be purchased online from diving, swimming or general sports gear stores. Local dive stores don't normally stock them as there's more profit in expensive plastic fins and many new divers, ignorant of the history of dive gear, associate them with lap swimming in the pool.
I don't suppose I've answered your original enquiry, but I've come to the belief that the feel and capabilities of any fin are down to the individual's own judgement. The best way to find a fin that matches what are subjective criteria is trial and error, experimentation. I'm very wary of the advice of people who claim that one particular brand of fin will fulfil somebody else's requirements. The problem isn't helped by the fact that manufacturers and retailers usually don't even publish data about the stiffness of blades and foot pockets in durometer-rated "shores" so that comparisons can be made. In the meantime, I have to agree with Azapa that you have already found a pair of bargain fins that are proving their worth in the pool even if they are falling down in their promise to duplicate the characteristics of your freediving fins.