Hello, all depends on the size of your tank, clownfishes you have or want to buy etc. Entacmea Quadricolor is very nice anemone. Does not grow so fast, has great colors and is not so sticky to kill most of fishes, you can have in your your tank. But is not very good for A. ocellaris. They rarely domesticate this type of anemone, cause they don't live there in nature. But for A. clarkii, A. chrysogaster and others is ok. So if you have or plan to buy A. ocellaris, I would recommend better Heteractis crispa. H. magnifica is nice too, but it grows so fast, that in one year you will have tank full of this anemone. :spin3:
EDIT: And one more hint. When you choose the E. quadricolor, try to get bigger one, cause clownfishes does not like small ones.