To find the best deal on a hard drive, I would go to these three web sites:
I've had troubles with every hard drive manufacturer in existence. Hard drives are mechanical devices and they
will fail. It's not a question of
if, it's a question of
when.
Some people will tell you to avoid Brand X or Brand Y because they had a series of bad experiences with them. I've had bad experiences with all of them.
You should be able to find an older (i.e. smaller) hard drive pretty cheap. This is especially true right now, as parallel
ATA drives are being replaced with
Serial ATA drives.
Personally, I would not recommend buying a used hard drive. There is no way to tell how much violence it has been subjected to.
And, of course, no matter what kind of storage you buy -- always maintain a current backup.
All mechanical devices will fail.
Best slinks collection 
Linear Mode
