While I love having reef tanks, I'm also very attached to freshwater. My favorite (which I don't have currently) is a heavily-planted 29 gallon for kribensis. They're so beautiful and I love their behavior.
currently I've consolidated all my tanganyikan cichlid breeders into one reef tank. I didn't want 3 or 4 75 gallons tanks anymore, so now I just have one. I do have an orchidarium, with a water feature, which has some cherry or crystal shrimps in there.