In that space I can think of only two that I might counter with
A. Something by Damasko, also German and also with a hardened steel technology with choices in the sub 3k space.
B. Something by Doxa because it has a certain unique “iconicness” like Sinn.
C. All things being equal, It sounds like the Sinn is talking to you. Given the very narrow price dif between buying with a bracelet v a strap, I would go bracelet and get an OEM and/or quality aftermarket straps and drive on.
Let us know what you do.