LD, Not that I have personal experience yet, But I am a 42DD with the breast changes from the DOM and my sister has given me all her residual breastfeeding supplies. She gave me a set of horns for the PIS that are supple material rather than the hard plastic, and she indicated that pumping for her two bio. breastfed children, seemed more comfortable and even a stronger "let down" when using the supple horns, Again I have not had the personal experience yet, but believe me I'll try anything. Much luck your pumping thus far seems great to me. Keep up the hard work.