Which menstrual cup when you have vulvadynia/vagnismus?

Bat

I'm going on vacation and really want to be able to use the hottub or have a romantic bubble bath with my girlfriend. The problem is I have vagnismus/vestibuldynia and the last time I tried a tampon it was awful. I've always been a pad wearer, but I figure if I can get it and doesn't hurt too much I can tough one out just to get in the water.

Which ones would you recommend? I heard some are softer and smaller than others.