I'm guessing internal? Where do you shop? Just find the one that meets your speed requirements that has a competitive price and buy it. There's really not a whole lot to consider outside of RPM, cache, warranty, and cost.
It makes me laugh because I was thinking about this the other day. 5 years ago I would have said forget it you're throwing your money away. But it seems the drives, mine anyways, are filling up faster for some reason. And also they seem to have better longevity than drives of a few years ago, therefore worth the money now. .