The SS back dial silver moon version, which my wife wears also. I have looked at the higher end A & S and been very tempted, the prices are crazy low on some of their models which gives me pause should I every want to sell it. The moon phase I have now will never be sold because my wife loves it but with other models that are Tourbillion etc drastic prices off of retail seem to scare me away. I would say, buy what you love but buy it right or be prepared to keep it...Jim