I feed something like cyclopeeze (Hikari, I think), mysis, dried copepods, some Formula 1 sinking pellet, and some regular flake food. I figure flake food is enough, but the finegrade cyclopeeze stuff goes all over the tank and gives the fish the pleasure of hunting for quite a while. When I'm on the road, they get flake food from an Eheim autofeeder.
I feed a crazy assortment of foods, flakes, pellets, frozen, liquid, live... you name it, I've probably used it, including some coral foods and extras like amino acids and ascorbic acid. I feed every other day and I feed nori in a clip for the serious vegetarians in the tank first. Then if they want any of the other foods they are welcome to it.
I'm with you Ron, I feed several types of food. My puffers will eat pretty much anything, from pellets to squid.. they go crazy over frozen squid. And the rest of them will eat whatever. Mainly brine shrimp though.