Pros
Association with the Korn/Ferry name and benefits and also that it does lots of RPO work so experience in that type of retained search is good to have on the resume. It's client base is very broad so your experience, if a generalist, can be rich. If sales are going well in a particuloar verticalyou are in (recruitng healthcare for instance) then you are going to have a good experience. OTherwsie your job is at risk. Recently(2006) Dallas opened nice office facilities - previous to that they were in a dump. Name generation resources are very good and training has been stepped up.
Cons
Instability of the type of industry they are in. Top management is not visionary and of course as an agency it cuts costs all the time. Evaluation process was not in place very well and came only once a year. There was no real effort to develop communities so that people could help one another. On-boarding new employees was a trial by error process. They do not always hire the best people so you can get stuck working for some real losers. Turnover is real high - yet I stayed almost three years. 'Finally left for a more promising job.