Update Feb 3, 2016: Please note that only the UK sizes actually exist in those cups. I filled in the U.S. and EU sizes just to give an idea of their corresponding cups.
That being said, all the bras I tried on were either 36FF or 36H, depending upon the manufacturer. I didn't mention anything about cup width or the shallowness of the bras. The post was merely a memory-jogger/brief peek into the fact that I totally feel your pain when it comes to finding the right bra. As I learn, I will share what I learn with you so that you, too, can become more informed about what fits and how it should fit.It would probably be so much easier if they just depicted cups much the way that doctors do: with cc--a measurement of volume but even that would have it's drawbacks and would take quite a period of adjustment to get used to. Jockey has attempted to do something like this but even they are limited on their cup range. They have only 10 choices for cups and their bands *do* start at 30 but their largest cup/band combo is 10/34 (cup/band) and the largest cup for the 30 band is a 7.