I used to use NLS for years and my fish were healthy and colors were solid...I've tried other foods, including cheap ones (Aquamax for example) and there is no comparison
New Life Spectrum and Hikari are 2 of the favorites generally when talking about commercially available. However I buy most, if not all of my prepared foods from www.kensfish.com. He offers excellent foods at great prices and I've been using them for years with my fish.