The Bottom Line: The Western Digital MyBook Essential Edition external hard drive is a slightly pared-down version of the MyBook Premium Edition. It's a good option if you need additional storage without backup software.
Specs: 250 GB, Hi-Speed USB, 8 MB, 8.9 ms, 7200 rpm
CNET editors' take
Specs: 80 GB, Hi-Speed USB, 2 MB, 8.9 ms, 7200 rpm
Specs: 320 GB, Hi-Speed USB, 8 MB, 8.9 ms, 7200 rpm
Specs: 500 GB, Hi-Speed USB, 16 MB, 8.9 ms, 7200 rpm
Specs: 160 GB, Hi-Speed USB, 8 MB, 8.9 ms, 7200 rpm
Specs: 400 GB, Hi-Speed USB, 16 MB, 8.9 ms, 7200 rpm
Specs: 120 GB, Hi-Speed USB, 8 MB, 8.9 ms, 7200 rpm