I voted on with my partner, but I prefer both at different times. There's some toys that you just... you just "can't" use with your partner for one reason or another. Maybe it's too hard because the toy wasn't designed for partner use, or maybe you just prefer it for solo because you're used to that. And then there's the toys that you'd rather have someone else operate such as teasing toys and whatnot. Eggs and bullets are among those. So it depends.