giving Flex a shot

I just got marketed to! I caved and bought a pack of the flex period cup thingys. I have thought about trying the diva/moon cup but the whole washing it out and all that seemed complicated. Flex is disposable. The other thing that advertise is mess free period sex. I am doubtful if that is the case as they later warn that peeing can dislodge the cup and cause spotting. I should get my period and Flex next week! Wish me luck and let me know if anyone has any feedback on the product!