Wowsers are an awesome zoa, got a small frag of them myself last year. They seem a little picky, at least in my system which is admittedly far from perfect. I had babies start budding off, then the color of the polyps all started to really fade. Only recently after moving them and tinkering with my tank a bit has the color come back. But the colors sure are awesome.
I'd second organism though, wouldn't want to buy a frag minutes after it was cut, let the fragger take on the risk of a melting, not you.