To begin with I always used pads, but hated it (refer to nappy, unhygenic comments-I totally agree), and doing physical exercise, sleeping, sitting down, walking for a long time was just a nightmare, so I started using tampons and never looked back. I thought basically everyone used them, I didn't realise that its sort of equal numbers between pads and tampons.
But I'm not sure I would ever use a mooncup though, if you did a handstand wouldn't it all go back up?! Sorry thats a weird thing to say but the thought just occurred to me :s