It depends on the maker, but most are very good. DWM, Steyr, Danzig. My favorite is the 1909 Argentino. 1912 Chilean is also a good one.What about pre WW1 quality?
That's a kind of an odd one. Pre 1905 they all had .318 barrels (if 8mm Mauser, as we know it) After 1905, they changed the diameter to .323". Anyhow, after that time point, .318" still remained somewhat popular for civilian rifles. Of which CZ/BRNO built a number of. Not the most popular diameter, as a lot of their output was for smaller military contracts, but they did build commercial rifles intended for Europe where that was most common.Mine is Chec with .318 barrel.