John, I can't believe you're giving out photography secrets! Hahah.

All these responses raise valid points. In the end, it depends on your taste and budget. I love Bombina (Fire Bellies) but you mention that your tank is more vertically oriented, and they wont use that vertical space. However, that doesn't rule them out. You can certainly design a very nice planted aquaterrarium with tall plants in the back. Not only are they diurnal, active, and colorful, but they're dirt cheap.

Alex