They aren't completely without fault, there is issues like pushing Jay Park out of company and interfiering with some of his promotions (not to extent of SM though) and favoritism. Some more minor are issues with staff (not abuse level though, just some unhappiness from 2PM mostly), not letting artist to show their own stuff and artistry.. But i guess they have least big issues from the big 3.
I'm sure there is better small companies than them though, but you don't often hear that much info about small companies.