....because I prefer the heavy metal versions. If I had to choose, first I would go for the blue dial, because it is near to the origin, the 3700... Second choice is even more difficult. I tend to the silver-white dial, in reality it shows an amazing change between clear white, light grey and shining silver. Just depends on the surrounding, sunshine, cloudy sky, inside light....
My 5712 has very poor wristtime... It took lots of time to get convinced by the asymmetrical dial...
The hidden queen in my eyes is the 5711R, I think it's the most beautiful Nautilus in the 5711/5712 comparison. ...and sorry for slightly off topic..