St. Thomas corallimorphs are the shiznit. A piece of cake to keep, spread very fast, and if you buy the right one, they can be stunning. One of the RC sponsors Coral Morphologic frags them, and they have some nice varieties. If you have a spare $100 sitting around, you can buy one of their rarer red forms. No matter which ones you get, they can easily be the center piece of your tank. One of my favorites. Awesome:thumbsup:. Expect to pay around $50 for a single polyp at the LFS if you can get them.