the center one is best if you are looking for straight line wfo stability on smooth water and you don't have a mag pump, but if you want max hook up in choppy /rough water where getting squirrely happens anyway, the JD is best.
not a fan of the old R&D on the left. I had the un supported top scoop break off, hit and unscrew the prop, shove the driveshaft forward and bust motor mounts and knock a hole in the pump cavity where it lodged. that was on an X2 15 years ago, but I never liked those since.