Thanks for the reply Mike.
I have kept apistogramma atahualpa in a 5ft tank, but I am told that they are one of the more aggressive species. Holding individual personalities constant, in your experience what are the some of the most peaceful apistos? From my reading, Borelli seems to be mild mannered. I did not know that there were apistogramma species that pair bond, I thought some had more of a tendency to pair bond, but were mostly inclined to harems.
I like Pelivicachromis equally well, and pair bonding is one of the highlights of the hobby for me. I like watching the two fish work together.
I'm sure you have kept many, many more dwarfs than most, which setup would give me more of those fun little miscellaneous interactions like squabbles over caves, fry stealing, ect. All of those little behaviors that make dwarfs so entertaining because we can give them more space than the big fish. Hope you understand what I am trying to get at