The All Purpose fins provide slightly less resistance to the Aquastrength Fins. The Aquastrength fins also provide more vertical resistance which makes them a good option for those looking to do lots of jumping / plyometric exercises. Looking at our entire range from most to least overall resistance you would have; Aqualogix Blue Maximum Resistance Fins, Aquastrength Fins, Aqualogix All-Purpose Fins and finally Aqualogix Green High Speed Fins.