I have the Double Front Compression Shirt--I'm wearing it right now, in fact. It binds really flat, but if you're not too big or you like baggy, layered clothing, you might not need it. (I'm a 36B). If you're looking for total flatness, though, it's great. My friend who lives down the hall from me knows about me being transgendered now, and he said he never suspected--when I told him about it, he said he'd never guess from seeing me in a t-shirt (and I'm always wearing t-shirts!)