IMHO I don't like SPS only or SPS dominated tanks because it creates an imbalance with the tank that I find unattractive. I like the look of SPS, but you have to see some different colors and patterns, movement, feeding techniques and responses, and different shapes and sizes. To me a tank without a variety of coral just isn't a tank at all. Montipora for those nice shady overhangs, sticks for the long branching beauties your fish swim through, acans/ brain corals to give the rock a flourish, zoanthids for some added exotic beauty, euphylia for those beautiful colors, shapes and movement, Kenya tree for that nice swaying motion, mushrooms for those funky shapes and pretty colors, a toadstool for something bizarre and massive, bubble coral for the added texture and shape, Duncans for rapid growth and amazing accent color, Sun Coral for that added blast of warmth to the tank and an amazing show when fed. How could anyone want to miss out on that ?