The Signature One and Remontoire are watches filled with technology and they both have amazing movements. For both these watches, the choice of metal becomes less significant than say a dress watch. The Signature One in Steel was limited to 33 pieces (I think!) and the steel Remontoire limited to 25 pieces. This adds desirability to the steel models of these watches as the Remontoire is limited to 188 pieces in total making the steel even more sought after 