I feed Mysis, spirolena enriched brine shrimp, "Mega-Marine, Angel formulae" PE Mysis, krill, live blackworms, pellets, daphnia, nori sheets, and occasionally squid and clams on a half shell.
So in my opinion a varied diet is essential to ensure all your critters are getting as full and nutritional diet as possible. Feeding only one type of food won't achieve that no matter what.
I don't care for Reef Frenzy or Rod's Food as they mix tiny particles with large ones and it can foul the water if you are not very judicious with using it.
I occasionally will use Coral Frenzy for the filter feeders and coral, but only every couple of weeks and I only use it on the same day I do water changes.
I mix it up, turn off filters, mix it in the tank, let sit/circulate for about 45 minutes - hour and then do my water change. Critters get fed and excess doesn't foul the water as badly.