I am sure I am not the 1st one to get a Sinn but here is my 857 UTC and some quick thoughts.
The box it came in with was rather underwhelming. I am not one to care so much about boxes but it would really help put a tad bit of effort in the packaging. Makes the watch itself when you open the box stand out even more in my opinion.
Today I was wearing my 45mm Steinhart Triton Dual time and I must say when the Sinn came out of the box I was rather surprised that 43mm/13mm thick would look so small against the Steinhart. Now granted the Sinn is not a diver so not as puck like but it did look small at 1st. Then something odd happened it grew on me and now the size look just right. The watch is rather comfortable to wear as well The dial is very well balanced super easy to read aside form the GMT hand which could use a bit of help to stand out. the gmt black hand even with the yellowish tip is barely noticeable on a black dial.
Overall I am super pleased even though it did take 3 weeks to get here direct from Germany
I will be staring at it for a while now so I need to run