Regardless (Whether A Or B)

12 related grammar points that express the same core idea - compared below so you can tell which one to reach for.

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Interchangeable forms

These are stylistic variants with no real difference in meaning or register - any one of them is correct, so there is no "which one" question to answer here.

あるいは / にしろ〜にしろ

It does not matter which of the two it turns out to be.

vs : Use にしろ〜にしろ. The paired form says the outcome is the same either way. あるいは is a plain 'or' offering a choice between alternatives, so it leaves the question open instead of dismissing it.