Which Flogger Hurts Worst?

Description: It's time to test out a few of my many floggers to find out which one hurts worst. my slave volunteers, reluctantly, to be the lab rat for this experiment. i have 4 floggers to test. the first is light and easy to swing but doesn't pack much punch. the second is heavier and begins to bring the pain. the third has knots at the end of the tails and stings superbly with each strike. this one really starts to turn him red. the last one is the heaviest of the bunch and packs quite a wallop.  my slave prefers the first 2, but of course, the third being the most painful, is my favorite.