I have used the Diva cup & am among many satisfied users.
I am a homeschooling mom, which means being out of the house almost all of the time. The Diva cup creates no worry, no mess, and no changing during that time.
Less money & environmentally friendly.
There use to be a disposable one, made of recycled materials. It was less expensive and great for testing out the idea. I haven't seen it in more than 4 years though.
So, the short answer is, I love it.