Actually it really depends on how you want to carry it, IMO if you dress mostly in casual I believe get the vintage. If you like to dress and experiment a lot try the metallic it will go a long way and ideally can be used for day to night. If you are from the younger generation definitely get the metallic.
I own both the metallic reissue and vintage classic, and I love both. It depends on personal preference and what you're mainly using it for. Do you like the MM or CC lock more? Metal chain or interwoven chain?
Pros: Brand new, younger look, this size can hold more, good for both day and night
Cons: Expensive, "trendy" metallic
Pros: LESS expensive for sure, yummy lambskin, more classic overall look, great evening bag
Cons: Holds less items, may have flaws since in preloved condition
But in the end, I get more compliments from strangers on my metallic flap. I guess it's more of a STOP! and look at me bag