With repros even by the same maker, for me the characteristic of the hide would sway my decision. I would rather buy a good used repro with great looking grains than a new jacket with bland grains even for the same price.
If you are lucky enough to find and be able to afford a good WW2 original, then hell ye... I'd cough up and store. But not wear... at least not often... Good investment, absolutely... if thats what you're after. I for one, don't want to collect originals, I want to wear my decent original-maker repros. I want to add my own wear-&-wear. Every crease and scuff, a testament to my own adventures wearing them.Lookalike a WW2 original by all details primes... yup! “House and harlequin jackets” ... “hangar queens..”
Way too many repro's of all grades get used by the wearer for strutting around in, few get worn by people actually grafting [physical labour] as many of the originals were and so taking on any kind of character and wear without artificial input is going to take a long time. I don't consider sitting at a computer desk tapping keys, attending meetings and fielding phone calls or taking selfies grafting.
Let's face it, most people don't use these work garments as work garments.