Fast boxers..

[Master]

Footwork - Roy Jones or Nunn
Handspeed - Meldrick Taylor or Amir Khan
Reflexes - Roy Jones maybe James Toney

[oakleyno1]

Zab Judah is actually seriously quick - at least for the first 4 rounds - Look at Tyszu round 1 and Mayweather rounds 1-4 and Cotto rounds 1-2.

In his prime I don't know if anyone he fought came close to his quickness - just a shame he could never put it all together

[X]

Check out Tommy Hearns at welterweight; the speed and power behind his shots was incredible. It was that speed that made him such a hard puncher.

[IamInuit]

I remember watching Shane at 135 and comparing him to Roy at the time and thinking that Roy was actually faster but Shane was lightening. Meldrick was a freak of nature as well and Leonard may have had the fastest hands of all.
Be interesting to see a study. I'm sure they have all had their speeds measured over time frame by frame but as yet nobody has ever gathered the results.

Suffice it is to say that speed played a key factor in all of their successes.

[El Kabong]

Floyd Mayweather Jr.
Roy Jones Jr.
Zab Judah
Shane Mosley
Manny Pacquiao
Muhammad Ali
Mike Tyson
Ray Leonard
Ray Robinson
Willie Pep
Meldrick Taylor
Yuriorkis Gamboa
Joan Guzman

[Jimanuel Boogustus]

Andre Direll.

[IamInuit]

Macho man was no slouch.