The colors are amazing and it seems that you have the perfect rocks, plants and substrate to show them off. When they pair off how in the world are you going to decide who to keep? They are all so wonderful, wish I lived closer for a reject pair.
i'm not sure how i'll decide as i've never had to make a choice like this before...
knowing myself (and i do know me fairly well ) i'll just buy more tanks and keep them all...