HIS is the best for stock cooling...they do, however, use the reference design.
Sapphire is great because it uses the reference design (so great, in fact, that ATi sells Sapphire cards under their BBA brand).
ASUS is great because they don't always use reference and they often are higher quality.
TBH, I'd just go for whatever you can find, those things are so bloody rare (not like steak)...
Maxtor disgraces the six letters that make Matrox.