question about frats

OK I know every frat say they don't haze which I think is bull because I been reading and watching videos on underground pledging that every frat does some kind of hazing.
I check out a few frats at esu wounding if someone one here can be honest and tell me what frats do under ground pledging and which are wet house or dry house? I looking for a frat who have parties but not every night . I am thinking of Delta Chi , Sigma Pi , Kappa Delta Rho and Phi Sigma Pi.