Aceto is very smart and damn well educated. The quite achiever.
Chad doesn't always get it right, but his record is unmatched. Nobody researches diets, contest preps & whatnot and wants to learn more than Chad!
Rambod is very good at what he does - as several of his clients will tell you - very well liked & respected in the industry . . . for the most part.
A special mention of Joel Mc Neil and Charles Glass.