Amir Khan and Terry Norris -- in their primes -- were my favorite fastest boxers to watch, especially Khan. When he really lit off and threw them it looked like someone going cyclic on a M249 SAW machine gun.
Meldrick & Ray both were something special throwing combinations! Roy IMO fastest potshoter, , from point A to B. Camacho's jab was a piston! Today, Manny is still up there. & from Point A to B, I think Wilder as a HW would land quicker potshot than Ruiz, but Ruiz takes it easily with combos.