What is my favourite Geophagus you're stocking?
Geophagus altifrons 'Rio Tocantins' (Or all altifrons really)
All Eartheaters?
Probably Gymnogeophagus balzanii (which I'm about to start growing up a breeding colony of)
I'm not familiar with a lot of the Rhabdotus complex but there's some real lookers from what I have seen.