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@gbj_tester
Sturdiest 3/32" chain is the Wippermann 7R8, but it's 91g heavier than a 7Z1, which in turn is 65g heavier than a 9S1 hollow pin 9-speed dérailleur chain (manufacturer's weights, 110 links). 9/10 speed dérailleur chain is pretty reliable even on MTBs and CX bikes which get shifted under load in worse conditions than you're likely to tackle on your bike.
Strong: 7R8
Light: 9S1
Cheap: 7Z1
This time around, pick just one.