Of course everyone is going to answer tenuis or mille. Everyone and their dog is selling them for a fortune for good reason, but I can't help but love the simplicity and elegance of a stag. They grow relatively easily and very quickly, so they give that awesome feel of accomplishment. Not every tank needs to have the hardest acros to keep. If we didn't have easy corals that looked awesome, we'd never want to keep corals because the difficult ones to keep are usually the most expensive and they often die when everything else looks great. The same goes for stylos. I wish there were more stylo variants out there because they're honestly one of the coolest corals out there.