I am definitely no expert and never once did I say I am. I just share my experiences and knowledge and welcome you to share your opinion and make a valid point to help me also become more informed. I definitely agree that the type/brand/formulation of pellets do matter and can definitely help with the outer appearance of your fish as well as the health of them. To answer you question on which pellets IMO are the best to feed FH or any other type of fish for that matter is: NLS.
I also disagree with your stament that nobody cares about what we have to say. Is obvious that even you care and have listened since you have now included NLS in your FH's diet when at first you were only considering Grand Sumo and Chingmix. What about XO why don't you feed your FH that? Worried about the possiblity of hormones and/or artificial colorants?