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Anyone who mentions SMART and reliability in the one sentence isn't worth reading - sorry OP.

I hve had bazillions of drives with a perfect SMART - which were unusable, and mamy others which had SMART throwing OSHA at me - yet they worked for decades, literally.

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iirc i address this in a footnote --- absence of SMART errors has very little predictive power, presence has slightly more but it depends which errors they are and how they accumulate

BTW transfer errors aren't indicating the drive errors. SATA is a quite nimble protocol so CRC errors do indicate the problem between the drive and the controller.

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