Which cup to get?

I'm thinking of switching to a menstrual cup... I have terrible cramps and I know the chemicals in my pads are not helping AND I hate wearing tampons. But there are soooo many brands for menstrual cups!

What cup do you use & why did you pick that one?

My vagina is so sensitive and honestly sex & trying to put a tampon in hurt me so I just need reassurance about whichever cup I decide to go with!