well i would def recommend a midas, they are awesome fish and i regret getting rid of my guy, i prefer their more chunky look to red devils but that of course is personal preference, you could maybe do a carpinte pair (though you would have to keep a close eye out for aggression), a salvini pair with a big school of some type of tetra and a smaller cat/pleco would be an interesting looking tank, or even a grammode or istlanum pair, just really depends on what you want, if you want a single wet pet or a pair or several smaller cichlids in a community...