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Both are good. The factory cable tends to be larger gauge/few strands of plain copper.
Welding cable will be very flexible with lots of thinner strands.
Marine cable should be fairly flexible with many thin strands and tinned.
Copper wires being tinned will be much more resistant to salt - water or road.
Picked this up from Amazon. Snagged a "blemished" one, for $40. Got it home and one of the terminal covers has a little wear spot on it. Pretty good deal for OEM