OMG I love the Diva cup!
I used to use one called The Keeper back in the early 90's and somewhere along the way switched to the Diva cup because you could get them in the stores and not have to mail order them.
I also find that while the heavy part of my period isn't very long, I too tend to have that lingering part at the end that's just a pain. The Diva cup makes that so much more tolerable. I also try to keep a water bottle in my purse for when I have to possibly change my Diva cup in a public restroom.