Monti cap as grow big and large and spirally and can attach other frags onto if choose.
My tank only young at 5 months so could possibly get one but because my experience is also young i will refrain from any sps till about 1 year mark of tank. And learn how to look after/care for softies and lps first then first sps i will be getting definately a monti cap ^_^
Slowly slowly wins the race