I would avoid lex and 125th. Been there 2 times in 4 years and both times people were passed out (nodding out from heroin) in the middle of the sidewalk and street and people just walked over them as its such a common occurrence. Plus know a doctor who commuted through there. After his second mugging he is moving out of NY.

Most other stations I have gone too have been fine. Just the occasional person with severe mental illness who if left alone usually leave people alone.