I know some will jump all over me but from my own experience with vintage DEs, if you compare them to the best modern Stainless DEs they simply don't come close. Yes, they shave great and can be very comfortable and are well made but modern design and machining and low production simply make a better product.

The difference between a great shave and a superb shave means getting a result the equal of a straight with a DE with the right blade and some experience.

I'm not knocking vintage, I have a bunch myself and they are fun to use now and then.