thats sortta like asking people what their favorite color is. I personally don't really care for hikari, though many people use it due to shear avalibility. I personally use 2 different types of pellets with my cichlids and a variety of frozen foods.
pellets:
Marinelands
cichlid Bio-Blend
Omega One
medium and small cichlid pellets
Frozen Foods:
Cooked and peeled shrimp tails
raw scallops
blood worm
plankton
mosquito larvae
beef heart
The best fresh foods that most duplicate their natural diet are Krill, shrimp, prawns, crayfish, worms, insects, insect larva, and small fish. I can barely afford to eat scallops myself so I wouldn't feed them, but otherwise they sound like a nice gourmet meal for them.
Any meat from a mammal is not recommended, including chicken and beefheart.