As long as it works and doesn't have a death-grip on the cart, I'd go for the deck with the new pins.

Retro gamers and collectors are going have to realize that eventually, electronics on these consoles will fail. Even if never used, some components like certain capacitors will just dry out and could fail as soon as power is applied. Or plastic or wires could be brittle from just age. Our Ataris and NES decks aren't immortal. People will have to learn to or have someone repair their stuff or get modern equivalents.