I don't like NLS either, just a preference. I use xtreme pellets and catfish scrapers for my big guys.
The gel food is nice because its versatile. For someone like me, running a TON of tanks, its great becasue it lasts in the water for a few days. I can also customize it with medication if needed.
Its not a replacement for a staple diet so much as a great tool for a breeder. The specificity of the diets makes it easy to feed challenging fish (i.e. things like my stiphodons that DO NOT eat prepared foods, graze readily on the soilent green) or make food constantly available to fry/grazers who would otherwise need to be fed multiple times a day.
The high quality of the raw materials optimizes growth and color. For me, its been a godsend. My water looks great, my fish are growing well and eating well adn it allows me to feed fish I otherwise had to do complicated live or algae cultures for.
