personally having had discus , i would say think about what you want from the fish . if you want big characters and personality/mischeif then discus arent for you. if you want lots of interaction and personality from your fish id be thinking along the lines of building a tank around a severum with a few other moderate sized sa cichlids. if its the sheer beauty/colour of discus that is the appeal for you , then why not consider an mbuna setup? these fish will be extreemely active and there will be a lot more "life" in the tank than with discus. and few freshwater fish can get near mbuna in terms of striking colours .