Pics of Calla Lilly centerpieces

I originally decided on doing calla lillies and roses (white) in a vase...see picture. The vases are mine (I liked the metal look and I wanted to have matching candle sticks). I originally liked this sample, but now I am having second thoughts. There is just something about it I cant put my finger on. I am not sure what I want. (which is typical for me)!!!!!!! I am going for simple and elegant..so I guess I could just do the callas, but I really liked the roses..(they were breathtaking!)

Any thoughts?

I wanted either low roses or high callas. This was what we ended up using

and ssshhhh, they are silk flowers