About These Menstrual Cup Things

Katrina
I've heard a bit about these now, and I have a limited selection in the area I live in. I've heard about MeLuna and DivaCup. I've also found Soft Cups by Instead. These are the ones that I am most curious about, does anybody have any info on the Soft Cups or maybe tried them, by chance? They're less expensive, but I still don't want to spend the money if they're not going to do what I need them to do.