Matted Filefish or Copperband Butterfly?

[ponokareefer]

I have been having aiptasia issues for quite some time and tried numerous different things. Some of these things include, multiple times using kalk, lemon juice, aiptasia-x, and 3 times I've tried peppermint shrimp. My next experiment to get rid of aiptasia is to try a filefish or copperband. Which is a better choice? This is in a reef tank, so I'm aware that the filefish may eat some of my coral. The copperband, on the other hand, should be better with my corals, but doesn't have a very good survival rate. I am only interested in getting rid of my aiptasia here, so once it is gone, the fish could be sold as well if it is not working out.

I'm aware berghi's may be a different option, but price and availability are their downfall compared to the fish, so I wish to try the fish first.