I feed a large assortment of foods. My fish eat a different food every day of the week.
I use Plecocaine for all my fish, NLS Thera-A, all the different varieties of Styx and Bytes from Neptune Aquatics, several different types of flakes from Neptune and from Kensfish, I alternate frozen blood worms, mysis shrimp, and I use the frozen brine shrimp that is enhanced with spirulina (it's actually very green).
I'm using two of John's newer variety of flake foods....the Mbuna/Tropheus flake and the Black Worm flakes make all of my fish go into a feeding frenzy!!!
In addition to all the great food I also feed about once or twice a week the Color Max flake.
And then there's the fresh vegetables that I feed to my plecos and the mbuna too.