I am curious about these cups. I tried a disposable cup that was available in supermarkets in the US (I can't remember the name) I leaked every time I sat down with one of those. I am hesitant to try anything else, though I like the idea of a cup. Has anyone had bad luck with leakage on one product, and sucess with another? I've worn a diaphram, so I beleive I know how to place something like this.

Mary