Look at OMS slipstream fins, with XS scuba springstraps. They are a very strong fin, the Navy uses them and cut down time on there excerises. IVS scuba has a good deal on them, but they have a good deal on everything."
that's interesting, I've never seen a single pair of OMS fins on a single Navy diver, but then maybe in some areas. I have seen them using the Jets, Turtles, Rockets, Mares, Navy Seals mostly use Force Fins, but nothing from OMS.
If you want a light weight fin that is very comfortable and easy to use, specially with a flutter kick then look at Force Fins. In the ONLY objective scientific test ever done (done at University of Buffalo) using them they beat out every fin on the market. Subsequent testing about 5 years later included the Apollo Bio-Fin (based on a Force Fin design BTW) showed they approached but did not achieve the efficiency of the Original Force Fin Design. Not to mention they weight <4lbs per pair and are still just slightly negatively buoyant, and they are 4 inches smaller than most fins. They are even on sale right now $193 at ForceFin.com with a 100% satisfaction guarantee and free shipping.