I'm a year into using the flex reusable disc and I'm convinced it's the future. I haven't spent a dime on tampons or pads since switching.
All of the claims, the emptying when you pee, able to be worn for mess-free sex, all of it is TRUE. It does take a few cycles to get comfortable with and it is freaky at first, but stick with it and you'll never go back. It's like shutting your period off with no fear of suction or TSS or toxins or disrupting your hormones. I am a flex evangelist.