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samsung 640gb 7200rpm
hm640jj
thanks for your input
going in a late 2009 17' macbook pro

I personally have NOT had good results with Samsung drives. I prefer Hitachi and Seagate (Western Digital is good too, I just won't give them any of my $$$ since they started putting proprietary soldered drives in their external enclosures).

The new Seagate 750GB 7200 is great in my MBP.

Cheers,
 
You can't go wrong with Hitachi or Seagate in a Mac - they're the most common OE drives.

I'd say to steer clear of WD - I've seen too many of the 2.5" drives failing. The desktop drives are fine.

I put a Samsung 250GB in my old MacBook Pro and had firmware issues with it. The Samsung was on special offer - wish I'd known why at the time. Having tracked the problem down I ended up having to put it into a PC at work to flash the firmware when they fixed it.
 
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