Western Digital product codes?

[eaglescouter]

Looking on newegg.com at the Western Digital SATA II hard drives with the 16 meg cache I see several different product code letters, but I was unable to locate a clear guide to selecting between these drives, here are the letters I found and the warrantee period listed:

YS 5 Yr warantee
KS 3 Yr warantee
AAKS 3 Yr warantee
ABYS 5 Yr warantee

I'm looking for a guide that explains the differences between these drives and helps me understand which one I should select for my builds.

[jivetrky]

This seems to explain it:

WD Model and Order Numbers (http://www.wdc.com/en/library/2579-001028.pdf)


(It's a PDF file)

[lenix]

Just google ( Western Digital "AAKS" ) or ( Western Digital "YS" ).. you'll find some threads talking about some of them.. can't really find a definitive document that explain each family