I've had my Diva 1 for over 6 years now. It's been my only cup, and it's...well, it needs to be retired, let's put it at that.
I'm thinking of switching to a MeLuna sport. Probably a medium size. But. I'm 28, so, do I need to worry about getting a larger size since cup manufacturers recommend a size larger at 30? I definitely need the sport, as I used to be a very active equestrian, and now mostly train in steel longsword, but still have very strong pelvic floor muscles. I am childless, and will always remain such, so that's not a factor. I do really like the fit of my diva, which is why I pegged a meluna at medium since I believe it's the closest to the diva dimensions.
Just wanted some thought consensus before pushing an order. =)