First Time Buyer! Lunette, or LadyCup?

Hi everyone, this will be my first menstrual cup. I've narrowed my decision down to two(or three) cups: Lunette Diana, Lady Cup, or (possibly) the Mooncup(all in the smaller sizes). I've read through a ton of the posts, but I'm still confused on which to choose. They are all around $30 - $40, and price is not an issue since I'd use it over and over. I'm 15 years old, my cervix is rather low during my cycle, it is light/regular flow, and I have bad cramps. I take part in various activies (camping, swimming, fishing) year-round and tampons are getting very annoying. I came across cups just a few days ago so I'm pretty overwhelmed.

Anyone have personal experience with these cups? I did consider a Diva Cup, but I think it may be too long for me(correct me if I'm wrong?) I'd really love to know which would be a better choice for me b/c I don't want to waste money on something that wouldn't work right with me. Are there any other good cups to consider? I'd really like to get down to the one cup that would be best for me!