I use New Life Spectrum foods. I target feed for specific fish: Freshwater Flake for schoolers, pellets for cichlids and corydoras species ( I feed a mixture of 3 pellets: Priobiotix pellet, Algaemax, and Thera A.), and wafers (algae) for PLECOs.
My fish fry, Ram cichlids, for example, get BBS and New Life Spectrum Fry starter.
I occasionally give frozen to condition fish for breeding.