[spaghetti]

I have the Cressi Reaction Pro for spearfishing in very shallow, rocky, creepy-crawly reefs and they are very good for this "specialized" tool and as snorkelling fins. The thrust is good for such a short fin. But still, it's just a short fin.
Long fins are still much better and safer overall: What if the current becomes stronger? What if you see a fish 12 meters deep while wearing a fair amount of lead ballast? Short fins can be more practical in a limited range of situations, and in facts I use my Reaction Pro only in some situations.
Cressi Gara or Omer Millennium are still a great fin for a cheap price that you can ALWAYS rely on.
And btw Armando: yes, the new Mares Razor do look good!