Deserving Mention Jack Loew The guy with the glasses (sergio martinez trainer) Javier Capitillo John David Jackson I can't think of any others ATM not tactically the best but just your personal favorite...
If I was a little boy starting boxing from the bottom up I would want to be trained by Steward. Next is Roger May. [ame]http://www.youtube.com/watch?v=Ztm5t18xgCQ&videos=6f7SB3XSOW0[/ame]
I think Nazim Richardson is one of the smartest guys in boxing. The Petronelli brothers did a great job with Haglar. Benny Georgino turned Danny Lopez into the dominate featherweight and kept him there for about 4 years. Danny did not have much to offer beyond a huge pair of balls and a monsterous right hand.
Honourable mentions of Ulli Wegner. Also Kessler trainer who also trained Salvador Sanchez - Jimmy Montoya. Joe Goossen. Enzo Calzaghe. All the above named are great trainers.
GOAT is Dundee or Arcel, take your pick. Best today? Roach or Roger Mayweather IMO, with Nacho in close 3rd. My personal favorite is Ray Arcel. You cannot **** with his fighters: Benny Leonard, Ezzard Charles, Jimmy Braddock, Larry Holmes, Roberto Duran, Barney Ross, Tony Zale, Billy Soose, Ceferino Garcia, Teddy Yarosz, Jackie Berg, Alfonso Frazier just to name a few of those he worked with. I also like D'Amato as well.