Not a matter of "stepping in it" at all. Yes, it's a watch that's been discussed many times and the elicits some strong opinions (cf. Dino, above!), but it doesn't mean it shouldn't be talked about. If watches that a few regular posters don't like were off limits, then this thread would be a boring echo chamber like so many others.
One of the reasons I like the Pano Reserve is its odd asymmetry - the Lange 1 is vertically symmetrical giving a much more formal flavour. They have very different personalities. The L1 is Mozart, the Pano is Eberhard Weber. One might well have been inspired by the other, and they have the same geographical origin - after all, twenty five years ago they were the same company. But even if the Pano was inspired directly by the L1, that's not the same as saying it's a lazy homage. The L1 didn't debut the off centre dial, and Rolex didn't invent the rotating bezel. The Pano isn't a L1 and the Seamaster isn't a Submariner which isn't a Fifty Fathoms. I like all of them.
A more difficult question though is whether to buy one. For a big shot, the Lange 1 is one of their cheaper models and produced for a long time now, so if we were in that league then it would look like a great way to have a real top-tier watch. But a steel GO has so many rivals. I think with a big discount or used deal it is a good watch: in house movement with lots of hand work (unique engraved balance cocks), strong style whether you love it or not, and that grey one I like has a sueded croc strap that's one of the loveliest I've ever seen. But at $7-8k best you have to look at what it's up against.
The TWAT orthodoxy would say get the MUT Moon. Personally I find that one a touch bland and I'd go Reverso 1931 from that maker and price bracket. And from GO, maybe the Sixties stands out - especially as you liked the white dial which tends to be the most easy to find/cheapest as a used or grey deal. I don't think Fred C has much to offer - the one you suggested is a pale imitation of the JLC MUT and I find that problem with the maker in general; it doesn't have a house style to speak of. And finally, the Nomos Zurich is lovely but it's a chunk to wear. I didn't like it on my 7.25" wrist - a dressy style with big casual feel due to the flat, cylindrical case and the long lugs. The Weltzeit you show would be the one because it looks more casual anyway. For a dressy watch, a standard 35mm Orion is lovely: the lugs are long again, making it wear larger, but the beautifully shaped case just sinks softly into your wrist like it was meant to be there. I surely want one.
Anyway, there's no hurry is there? I would suggest going to a big watch shop with no preconceptions but a budget, and trying a whole pile of stuff on. There is nothing like seeing a watch on your wrist, and we always like to see the photos. :)