That is fantastic, Kyle. Nice seeing them eat like that!
Angels have such a hard time deciding whether to eat or not IME. They eat one thing one day and then refuse it the next. Im pretty new to angels and they have been a challenge for me, part of the fun though I guess. If it got too easy Id probably get bored.
I use both Hikari and PE mysis in my homemade food, and I use straight PE when enticing fish to eat (rinsed, as it does make a cloudy mess). I'm not sure why, but they seem to prefer it over the Hikari, and with the ridiculously high protein content I do as well. If the pieces are too big for the fish I'm targetting, I find it pretty easy to chop when partially frozen.
I just might have to give PE another try. I'm also considering setting up a small culturing system for mysid shrimp where I can gut load them with phyto or something like Selcon before collecting some and making my own mysis of sorts. We'll see what space and time allow for.