I have a trio of Barlett's and a trio of Sunburst anthias in my 90gal along with a pair of B & W Aussie clowns and a Solon wrasse. Mine have all only been together for about a month or so, so I won't contradict the persons opinion before mine. I have a little aggression between "like" species but nothing that would cause death, or at least yet. I haven't even noticed a nipped fin or otherwise.
I went with the Bartlett's first because I couldn't obtain another two Sunbursts, then was able to get them. They're hardy, and fairly easy for an anthias species. Sunbursts are generally perceived as being more difficult, but I don't believe so. My first one (over a year old) was first in my 30gal cube and did awesome. I actually only fed about once a day or every other day. He only started to lose weight when a bully of a Mystery wrasse was introduced. He has quickly regained weight in the 90gal along with his new inhabitants.
As long as you get specimens that are eating and are healthy you should be fine as long as they stay well fed. I can't stress this enough. My dealer will actually hold any anthias for at least a week in QT to make sure that it is healthy and eating. I mix several foods together along with vitamins and feed twice a day.
HTH