I have had Regal Angels, Flame Angels, Joculator Angel, Blueface Angel, and many others. The flames have been hit or miss. It seems to depend on how much live rock surface is available to nip on instead of corals, the regale have always been model reef tank citizens for me, the Blueface knawed on everything in spite of heavy feedings, and the Joculator was pretty well behaved though I lacked some PE over the long term (never caught him nipping just a suspect). Anytime you add one of these beautiful creatures to your reef you are taking a calculated risk. I've always thought the risk was worth it.
I am now rolling the dice on a goregeous 2.5" flame angel, and I hope we have a winner �� time will tell as I've only had it since Monday!