I just got a black and he is gorgeous. He likes to try to squirt at me and has such personality. The Pinktail and the Black Durgeon (Hawaiian Black) are in the Melicthys Niger family and are both fairly peacefull for triggers even though they are listed as semi-aggressive by some. I would say get whichever one you like the best. The Pintail gets a little bigger. Here is a pic of mine while in QT, keep in mind the lights are incandescent and this fish is way prettier under actinic. It also changes colors, today he is more black then the brown you see. Also the white you see on the tail is actually blue.