Advice greatly welcomed. Context: 1. I have a Cartier Tank for dressing smartly. 2. I have a bunch of divers and others for casual. 3. I hate buying new and would always prefer used. 4. I find anything over 41-42mm too large to be acceptable on my wrist, with my clothes, or in general. 5. I have an utterly irrational predujice against Rolex. Dilemma: I oddly fancy a chrono or similar of some kind, not too expensive. On which basis, I am mulling over: 1. Omega Speedmaster. 2. Breitling Navitimer (smaller sizes, not the 46). 3. Brietling Datora. 4. TAG Carrera - not the one with two very obvious dials, but the variants with a plainer face and the sub-dial at 6 o'clock. I know the correct answer is Speedmaster. But I somehow just cannot get excited about them. Though I have tried. I also know the TAGs are supposed to be overpriced rubbish. But they are cheaper, used. And some look very classic. Are they reallly that awful? Ideally, I would like a pre-TAG Heuer, but is a post-TAG TAG Heuer as mediocre as many think? And I know Brietlings divide opinion. Including mine, where I prefer the Datora to the Navi, bizarrely because it looks likes a Navi, but isn't, if you get what I mean. Additional: 1. I hugely admire IWC, but have never had an "oh yeah" moment with any of them. Finally: 1. Datora, probably. But please argue against. Thank you.