the foxface looks better the butterfly fish, they also change colours at night; I like to call them "pajamas" haha. Butterfly's are also very finicky eaters so it is hard to feed them.
IME the foxface is easy to take care of; I have one in my fowlr
and my friend has one in his 120 reef and we both agree, they are very nice additions to any tank with sufficient size.
Just my 2cents. Hope I helped
Not having a quarantine tank is like playing Russian Roulette, nobody wins, you can only see who plays the longest... Unfortunately, I don't have the time, money or patience for a quarantine tank so... That sucks