Tamas,
If you want real power and the ability to perform any kick style with a near neutral fin, I would go with the Dive Rite XTs. These fins are about as bad as they come and do not come near the highest price point. They are truly incredible and you will move like you wouldn't believe. They are based on the old Apollo Fin mold that everyone loved so much and the new buckle is marine grade stainless. So far as vents, they have huge channels on the bottom with cause massive flow to be forced through. I was skeptical about the amazing accolades too until I strapped them on, and Lamar did something very right with them.
Here's a link to show them: XT Fins
If you want real power and the ability to perform any kick style with a near neutral fin, I would go with the Dive Rite XTs. These fins are about as bad as they come and do not come near the highest price point. They are truly incredible and you will move like you wouldn't believe. They are based on the old Apollo Fin mold that everyone loved so much and the new buckle is marine grade stainless. So far as vents, they have huge channels on the bottom with cause massive flow to be forced through. I was skeptical about the amazing accolades too until I strapped them on, and Lamar did something very right with them.
Here's a link to show them: XT Fins