A chain brand thread. I think that it's kind of like choosing an appropriate lubricant for your chain. People whom I respect have very strongly held but conflicting opinions regarding chain brands. I think you'll be better served to stick to non-controversial topics like religion or politics.
I prefer SRAM chains myself but don't ask me why.
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My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.