You can always get more frags. It's like looking a nice display tree in someone's yard. Do you plant a seed and wait 20 years, or do you do the transplant thing? I am always looking for more frags, but the big colonies that grow, i like to leave alone as much as possible. That is what a healthy reef looks like, some predominate large corals with other compatible species at chemically predetermined distances. I break this rule a lot because "I want one of those" hits me at the LFS, but I try to keep a trend going.