I'm planning out my "dream" tank now (well, not a dream tank because i'm actually doing it).
Its a 185g bichir tank (big, but not so big that maintenance is a PITA). Mostly bare-bottom (some black sand), with a couple large centrally placed rocks, and a few smaller outlying ones. Black background. Some floating waterpsrite (nice low tech plant, no need for CO2, ferts or super wattage lighting). The best part is having a bichir pile.