Anemones are not reef safe, Well they are if you have good lighting and they find a spot to stay put. But if you have a wondering anemone he'll just sting most your corals. So just be careful on that.
For a anemone, I've had a few different types. BTA's are boring i think, Only had one that was OK.
Condys are pretty cool.
But I'd go for a Carpet, Easiest anemone I've had to look after and probably the best to watch eat. If you have the money, A Blue or Red Haddoni Carpet. (But in saying this, They are the most vicious anemone out there. So there is a chance you could loose a fish if they decide to have a close look.) And if you get clowns to host it, The way they sleep in the anemone is pretty funny.