Tampon, hardly ever use a pad - only when Im really short on tampons or very heavy.

However, I have been waiting for this pregnacy and after it will start using a mooncup or similar. Im thinking or getting into reusable/cloth pads too.
Aside from the enviroment and costs it surely got to be better for your body. I wish I had known about them years ago. I sometimes wonder if tampons have contributed in anyway to some of my endo etc.

On an enviro aspect re; tampons, DH went to the sewage works when he was at school for a tour, and he said the ponds were just full of tampons. He said it was obvious to him that the shouldnt all be there, yet unfortunatley they are.