OmegaOne Goldfish Flakes is the best, if you can find it. It's made of whole fish meat and contains none of the fish meal stuff. It's relatively expensive though, and not sold in major stores.
For the common stuff, I'd say the new improved TetraFin is the best flakes, it has a high protein content, and the flakes are somehow firmer than the other brands I've used so they don't break apart when they hit water.
If you want to go the cheap route, I just ordered some goldfish flakes from
Kensfish.com, got a whole POUND (16 oz) for just $5.75! The ingredients aren't that great but is better than Wardley's, and my fishes seem to love it! I also like the fact that since they ship in bags, it contains HUGE flakes! I got a couple big fishes and normal canned flakes are always too small for them. I mean these flakes are like 2-3 inches in diameter! Anyways, so far I think it was $5.75 well spent.
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