I know this thread is 2 years old but i can't believe you put Red Devils, motaguense and black nasty cichlids higher than buttikoferi tilapias.
Midas are more territorial than aggressive imo. Red Devils are just mean.no Midas on this list? wow ,from my exeprienec they are worse than the red devil and the trimac but that's my experience.
These kind of observations are invaluable.I agree with Darren, I believe most cichlids under normal circumstances are only aggressive if they aren't in the right size (too small) tank.
I have watched a 7" pair JDs defend a territory in nature of about 4ft x 4ft x 4ft (250 gallons +).
Yet most people will say a 75 gallon is adequate, but not from my observation.