+1
Differences are more about weight and cosmetics, rather than wear.
Ironically, more expensive cassettes often have shorter lives owing to lighter (softer) materials used.
As for rust resistance, the plating or other surface treatment effectively resists rust except for wear zones which expose the base metal, Here they act like railroad tracks which don't rust al long they are used regularly. So, you'll be good with any of the options as long as you don't leave the bike sitting out in the rain unused.
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