One other thing I've noticed in my tanks, the more cichlids you put in one tank, the less the anthropomorphic the personality becomes, and a natural group-fish attitude becomes prominent, much as in the dynamic of a shoal of African cichlids.
Although individuals may react differently, and become more imprinted over time.
If you are looking for that "personable" recognition factor, keeping the tank to a single specimen (or pair) may be your best "way to go".
Any single cichlid (or for that matter any more highly evolved species) will imprint on you personally if that is it's only option, or outlet, the more other cichlids in a tank, the more that option diversifies into the group.
Sometimes only 3 cichlids together, can make the owner insignificant.
And obviously, the more time you put into the relationship (as my X-wife might attest) the more you get out of it.
A friend of mine has an octopus that builds lego structures, and at times seems to purposefully ignore him, if the mood hits.
But there I go, rambling agin.