I use colour bits and HIkari cichlid gold.
Differences are:
Bits sink and are small and easy to eat and do enhance colours of fish. I use them and have no problems feeding it to my fish through a auto feeder.
Cichlid gold floats and is quiet hard to it takes a while for fish to adjust to chewing food rather than sucking it down like bits or bloodworm for example. Gold is made by a company that we all probably use in some way to feed our fish so big names=big bucks and research. Although bits are made by a huge company too....
I find that gold will cloud the water a little when the fish go for it as they tend to spit it out and take it back in several times until they swallow it so a lot of particles float around the tank and this is with the small pellet.
Read the good stuff on the back and try both in small amounts...I feed both all the time.
hope that helps a bit