I don't really do big. In terms of insertables, the biggest girth of any of my toys, is 5" circumference (Tantus Buzz II), and that only gets played with if I'm in the mood for a bit of pain. I do have an inflatable toy that can get bigger, but I rarely use it, and when I do, I don't inflate it much. Length wise, I don't think about it much, getting much more than 4-5" in me doesn't really work.