Just treated my kitchen to a beautiful Chasseur oval dutch oven. Although the range is CI, it is double enamelled so therefore is probably not not suitable for use with induction cooktops. (Magnets don't stick to it). It is fine for ceramic cooktops and I love it. It was horribly expensive though, so I think this may be the one and only piece I will be able to indulge in:)
If you can afford it, it is well worth the investment as long as you don't have, or intend to have an induction cooker.