Depends what you want to get out of it. The Mares Volo and Cressi Master Frog look like they would operate very similarly, because they're both very flexible and have a lot of snap.
I've only seen the Mares Volo & Quattros in action personally. So I'll talk specifically about those two.
The Volos are great for flutter kicking but not so good at back kicking. In comparison with the Quattros, they lack thrust when using minute movements for frog and helicopter turns; they especially lack in back kicks, although you still get some movement, there's really not a lot of momentum behind it. They rely on their snap to give you the greatest amount of thrust, which means you need a big kick to flex it.
The Quattros are stiff and act more like Jet fins, except they feel longer. They work well with every type of kick if you focus on a kick-glide-kick method.
From the looks of the Cressi Master Frog, they don't look like they could excel in helicopter turns and look atrocious for back kicks. The blade is so thin that you wouldn't be able to utilize any side wall of the fin for thrust, which is what helicopters and back kicks need in a fin to be effective.
