I just got into the series and Coven was dope. I loved Asylum as well, it just felt dragged out a bit, for some reason. I'm about to get into Freakshow but keep hearing it's not good, lol.
Season 1 is awwwesome. I'm surprised Asylum is so praised among the AHS fans, when it aired I gave up on it halfway. Coven was messy but really fun. Freak Show has its moments but... no.