They get a lot of hate for their logo, but they’re doing more interesting things than the vast majority of watch companies in their price range.
NeurosciGuy15
Aesthetically I like the 556 (and have had two over the years) but they don’t do much for me nowadays because they lack Sinn’s tech.
Right now, I have a Sinn T1 in my collection:
https://www.sinn.de/en/Modell/T1.htm
Titanium, nitrogen gas filled, copper sulfate capsule for moisture management, locking captive bezel. Aesthetically, I know it’s a weird watch. But I love it and I think it’s a classic tool watch. It’s so interesting and IMO is peak German watch engineering, very function over form with that massive minute hand and diminutive hour hand.
Is there a Swiss equivalent? No, there’s not. Japanese? No. And that’s why it’s great.
Sinn is a brand many people look at their 556 or 104 and think “what’s so special?” But they have a really deep catalog full of tool watches that are quite interesting.
They also have a true super compressor (whereas pretty much every other super compressor out there just looks like one), and their in house SH21 movement (120 hour power reserve via double barrel mainsprings, COSC spec). So that and the ones you listed make four pretty interesting aspects from a technical/design perspective. When most companies are just slapping sellitas into cases I’d say that’s something yeah.
I’m not a buyer for a lot of their stuff, but I do think they do more interesting work than a lot of brands in that price window.