Too much or too little?
Rebuilding my HTPC also involved pulling the four hard drives out and replacing them with a single terabyte drive. While the new drive is actually a downgrade from the 1.25 TB that I had in there originally, I managed to cut down on a lot of noise. But, now I have this stack of smaller drives that's just sitting around at the moment.
These also happen to be Seagates but I *think* they're not affected by the latest firmware fiasco. I might considering getting one of those drive docks so I can make some use of these.