I have been using the same pair of USDiver Blades since 1994 and have decided it is time for some new ones. I have brought the choices down to: Mares Avanti Quattro Plus, Aqualung Slingshots or Aqualung Hotshots. I like the power of the Quattros, the adjustability of the Slingshots and the adjustability and shorter length of the Hotshots. Unfortunately unlike a firearm I cant go to a range and rent each model and try it. Local shops that rent gear do not offer these fins as rentals and they are a little expensive to purchase blind. I welcome any and all suggestions and why. Most use will be South Florida reefs.