You didn't offer the Keeper, which was my first cup, as an option. That's the latex version of the silicone Moon Cup, which is what I have now. I think I actually liked the latex one a little better (but I lost it when I moved, and the place I went the *ahem* day I realized only had Moon Cups.
The lady at that store was asking how I'd chosen the Moon Cup over the Diva cup (which they also stocked), and I told her I was familiar with the brand and had liked it. She said it was a wise choice, that most people though the Diva Cup stems were less comfortable.
Also, Moon Cups / Keepers have graduated cylinder lines, which makes nerdy little me a little happier than not having graduated cylinder lines.