"absolutely amazing quality on some reps nowadays.. and also amazing crappiness."
I agree and imho...
The "amazing quality" is in the cases, dials, and bracelets.
The "amazing crappiness" is in some of the various clone movements.
A top quality watch (appearance wise) with an improperly designed/assembled/oiled 'oem lookalike' clone movement with no parts availability is going to be a problem sooner or later no matter how good the watch looks on the outside.
The clone rlx 3135 is one example of trouble on the horizon with some versions being worse than others. A clone 4130 may not be quite as bad, I do not know because I have not read much about them.
Clone ETA 28xx...not too bad because replacement movements and some parts are available on eBay etc at relatively low $$. Swiss ETAs can also be used but their prices are rapidly rising.
The Miyota 9015 may be an alternative but dial foot location, hand sizes, and DWO can be a hassle. The APRO etc with the 9015 is probably Ok but I am only guessing, never had one.
Another example...
James Bond big crown Submariner case 316L Miyota 9015 movement sapphire crystal | eBay