Menstrual Cup

Kala
I just bought my first menstrual cup. I'm 31 and have had a child 6 years ago by cesarian. I start my period in 2 days according to Glow, so I thought I would try it. I decided to get the Diva Cup since I could buy it in store and it was fairly easy to find. The other cup I am interested in is the Lily Cup. 
I want to know who has a cup of their own and how well it works for you. Also how many did you have to buy before you found the perfect fit for you?