I mostly use Hikari and NLS purchased on Amazon. I've got mostly gouramis right now, no monsters. They get freeze dried brine shrimp to make them pretty alternated with NLS small fish formula. I toss the bottom feeders a Hikari sinking wafer every now and then.
I used to breed gouramis and fed exclusively live brine shrimp that I'd raised myself. Now I'm happy enough with the coloration I'm getting from freeze-dried that there is no point.