Bain & Company returned to the top spot after a two-year absence. One reason: the firm improved its average in 15 benchmarks, highlighted by a .249 of a point improvement in compensation and a .198 rise when it comes to supervisor relationships. Looking at Bain over a two-year frame, the firm has also raised its game when it comes to formal training. At the same time, there are two red flags, as Bain respondents scored the firm lower in the diversity and level of challenge dimensions.