Jeroensurf said..
Fins are imo very personal and have to suit your conditions and technique as well.
Quobbas have just less drag and more hold than classical fins with a similar planshape. This is why I cannot understand why one would use performers instead of Quobbas, which is the original post query. Quobba have only benefits in this case, apart from the tool-less system (unless if you also use screws like in the pic by drivethebus)
But speaking of fins with very different sizes (e.g: 2+1 setups, twins, singles, ...) or planshape (C-Drive, S-Wings, Spitfires, keels, ...) is a quite different topic. There you have drawbacks and advantages, that may be worth it or not depending on what you are looking for.
