Scubapro Go-Sport or Go-Sport Gorilla. The Gorilla is a little stiffer otherwise identical. They are very light, super comfortable thanks to a full foot platform and open toe and they make plenty of power and do all kicks very well and lastly they fit in a suitcase/dive bag.
I have and use Mares Quattros, Deep Six Eddy and Go-Sport Gorilla. The Go-Sport is the BFE (Best Fin Ever) for it's ability to do everything well and do it comfortably. If you insist on bucking currents and push a large camera the Gorilla model is probably a better bet though I have owned and used extensive the standard and Gorrila and do not think there is that much difference, a little difference in stiffness mid blade is about it.
If you are techie oriented, like to be GUE/DIR cool kid and want an expedition grade flipper that just oozes quality, the Eddy Fin is a good choice. Eddy vs Go-Sport, both size large (Nike/NB size 11):
It is the curve in the blade, the bungee strap, the full heel support and open toe that makes the GS the BFE for me over the Eddy. I enjoy and use both and if I can find room in my bag and know I will need to buck heavy current and will not need to back fin and skull much, Quattros go with me. Another note, if you have to walk or skooch alongh on a slippery deck, the Go-Sport 'S' provides sticky traction.
