IMHO Purdue has the 2nd-best coaching since 1985 in the conference.
However, if you look at talent, Purdue has probably been 4th-6th in conference on a consistent basis since that time. I'd rank at least Indiana, MSU, and Michigan higher. Probably also OSU. Maybe Illinois has an argument too.
This has led to consistently strong performances in the regular season, but running into a wall in single-elimination tournament scenarios against teams with more STARZZZZ.