Size. Coho salmon has rich, reddish-orange meat and has been called one of the best tasting salmon. Although Coho costs less than king and sockeye salmon, its quality is still quite high.Coho are a medium fatty salmon that have nearly two times the oil content of pink and chum salmon, but less than sockeyes or kings.ize. Coho salmon has rich, reddish-orange meat and has been called one of the best tasting salmon. Although Coho costs less than king and sockeye salmon, its quality is still quite high.