Try to avoid males that are very similar, which is difficult, there is no perfect mix, just rather random results. Avoid the "get one of each" mentality. Quality better than quanity. Try not to get carried away with larger fish.
Choose from Aulonocara, Copidichromis, Protomelas, Placidochromis, Scienochromis, Otopharynx, maybe a C. moorii. Maybe get away with a Venustus. Avoid the meeker Aulonocara or Lethrinops species, since they may not color up.
The hybrid cross genera "Peacocks" vary in color and temperament. They might be too aggressive, you never know. Opinion about these hybrids vary, guess depends on your viewpoint.