http://www.behardware.com/articles/773-6/components-returns-rates.html
>     Hard drives
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> These rates were only for returns to the retailer, which isn’t always the case as you can also return a product directly to the manufacturer: this does however represent a minority in the first year. Here are the figures:
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> - Western 0.89%
> - Hitachi 0.92%
> - Samsung 2.25%
> - Maxtor 2.79%
> - Seagate 2.89%
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> Western and Hitachi both do very well, but the situation has got a lot worse for Seagate and Maxtor (Maxtor, remember, is owned by Seagate). If you look at products with rates of 3% or more, the reason becomes obvious:
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> - Samsung SpinPoint T 500 GB: 12.9%
> - Maxtor DiamondMax 22 1 TB: 6.5%
> - Seagate 7200.11 500 GB: 5.2%
> - Maxtor DiamondMax 22 500 GB: 4.8%
> - Maxtor DiamondMax 22 750 GB: 3.9%
> - Seagate 7200.11 1 TB: 3.7%
> - Seagate 7200.11 750 GB: 3.6%
> - Seagate 320 500 GB IDE: 3.2%
>
> The 7200.11s and DiamondMax 22s have a big negative impact on the Seagate and Maxtor rates, because of a bug in a firmware update at the beginning of the year in this series. Note moreover Samsung’s very very poor score for its SpinPoint T 500 GB. Here are the rates for 1 TB drives:
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> - Maxtor DiamonMax 22: 6.5%
> - Seagate 7200.11: 3.7%
> - Samsung SpinPoint F1: 2.9%
> - Samsung EcoGreen F1: 1.6%
> - WD Caviar Green WD10EACS: 0.9%
> - Hitachi 7K1000.B: 0.8%
> - WD Caviar Black: 0%
> - WD Caviar Green WD10EACS: 0%
>
> The DiamondMax 22 is followed by the 7200.11 and then the SpinPoint F1. The most reliable drives are from Hitachi and Western Digital, with two models at 0% returns over the period!