I normally wear a 34D, but Warner's doesn't make that combo of band and cup size, so I took a chance and ordered 36D. It fits on the smallest set of hooks and eyes, and the straps do not slip off my shoulders.  (I also tried a 36C, but the cups were too small.)
It's very comfortable, the straps are minimally stretchy, which is important to prevent too much bounciness. The wide band under the cups stays in place and does not fold over on itself. The entire bra is smooth and soft and very comfortable. While it is supportive, I would not go on a long walk or engage in any really strenuous activities while wearing it. It's fine for everyday wear, but it's not a sports bra by any means.
My criteria for evaluating bras and shoes is: Do I think about them while I'm wearing them? The answer is no, I don't think about this bra at all.
It's a keeper!
7/23/18 UPDATE:  So after wearing this bra all day a couple of times, my bust became very tender and painful in general. Although it's comfortable, it does not provide enough support/compression for me.
Bear in mind, I'm one of those weirdos who feels uncomfortable without a bra. I even wear one to bed, which is what I'll be using this one for. In the daytime, I like to wear a bra that doesn't allow any bounciness. I've worn minimizer bras in the past and still would if not for the underwires. So my search continues.