I believe in feeding a variety and all my fish and corals get a variety of frozen formula 1, hikari mysis, piscine energetics mysis, enriched brine, krill, silversides and cyclopeeze. I also make up some frozen on my own for a treat which is fresh clams, shrimp, nori and formula1 flake and selcon mixed in a blender and frozen. I just grate up a bit every so often.....
I also feed formula 1 and 2 flake and pellet.
My wheeler gobie prefers pellets but everyone else eats the above.....
I think that variety is a must....keeps things mixed up and interesting.....