WD 4TB Elements Hard Drive | $90 | Amazon
This WD portable hard drive doesn’t require an external power cord, and can hold 4TB of movies, music, photos, or even console games. Not bad for $90, an all-time low.
This isn’t WD’s newest drive (though it does carry a 4.3 star rating from over 3,000 reviews), and thus doesn’t have built-in software like password protection and encryption like WD’s newest drives, but those are things that you can easily set up yourself.