I have no experience at all with an Hitachi HDs. But, I have heard some bad things about them.
However, I have 2 160 GB Samsung SATA HDs in my main rig that I've had for about a year and a half. They have served me quite well, so far.
MicroCenter has these for a very attractive price: I paid around $60 or so for them.
Here's a list of SATA drives from Micro Center:
http://www.microcenter.com/byos/byos...facturer_title=