I don't have real numbers for this but I feel like post-burn-in retention is very high - like 99%. We do not have preferred manufacturers. Data suggests that

I don't have real numbers for this but I feel like post-burn-in retention is very high - like 99%. We do not have preferred manufacturers. Data suggests that Hitachis are better than Seagates but I reject this kind of Ford vs. Chevy preference in hard drives - the "good drives" can flip immediately - with new model or even new revision of existing model. I don't think it makes sense to try to pursue a particular manufacturer. FWIW, we have bought a ton of seagates over the last four years and they have been fine.