I have the U2 S ordered and want a nice Sinn chronograph to complement the U2 S. I'm looking at the Sinn 103 A Sa with German day (it's sold out vey fast and I nabbed one it's on the way) or the Sinn 203 Jubilaum Limited edition also on the way. The 203 is all titanium so I will see how the Sinn titatnium looks. I want the German day as I lived in Munich for 5 years so it's a past thing. If anyone has any input and/or first hand experience with these models please chime in. Photos courtesy of WBs.