I am wondering what people hear about how relatively friendly/congenial are the top 10 departments? I hear, for instance, that Berkeley faculty have a reputation of being hard to approach. At Chicago, faculty of different areas don't seem to interact much with each other with some groups being reasonable in their attitudes towards the graduate students while others "ignore" the students. I know it depends on advisor but I wondering what departments among the top ranked are viewed more congenial vis-a-vis the graduate students versus not. Maybe, in the end, all the departments are brutal and the students are all viewed as pieces of meat.