What extras do you get for your money?
Although we’re deliberately focusing on drives that are simple hard disks, it doesn’t hurt if they come with some extras. Happily, all at least come with a USB 3.0 cable in the box, and, in the case of the drives that have multiple interfaces, you usually get cables for them too. The G|RAID comes with a FireWire 800 to FireWire 400 cable that lets it connect to Macs with ports that use the original implementation of FireWire, and kudos to LaCie for bundling a Thunderbolt cable with the 2big Thunderbolt 2 as well as a USB 3.0 one; they’re pricey.
All, except the drive from G-Technology, come with bundled software, but it’s a mixed bag. With the LaCie drives you get Intego Backup Manager Pro; decent software, but we’d understand if you stayed with Time Machine. The Seagate backs up iPhone photos when on the same network and can scrape Flickr and Facebook photos – although, for the latter it stores them in your Home folder. Otherwise, it’s just configuration dashboards.