You should really like this then.
Besides that, I don't find them agressive at all. Most of them are touching other corals and I have not found any problems but of course it is better if they don't touch anything. The other corals damage them. Some of mine have been in there for eight years but most of them are there maybe one or two. They are growing fairly fast and some of them fragged themselves by touching something else and growing on it.
Paul