Backing up on a mac. Which HD should I go and get?

I am going to se superduper! to backup my internal 320 GB sata, but I digit it would probably be smart to also backup some of the stuff from my external 300 GB EIDE LaCie drive.



There seems to be tremendously little discrepancy between 320 GB and 500 GB drives, so I figure I should merely get a 500 GB, wall it, use SD to make a bootable copy of the 320, and after use the rest for saving sure movies or my picture collection.



Does this make sense?



If so, which 500 GB drive should I buy, and from where on earth?



I was sloping toward this one:

http://www.newegg.com/product/product.as...

although this one is cheaper:

http://www.newegg.com/product/product.as...

Backing up on a mac. Which HD should I go and get?

I would go near the Seagate. I buy most of my drives online and find a good broker through



http://www.pricewatch.com/

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