I'm looking at the Seagate Wireless Plus and the Corsair Voyager Air. Has anyone used either of these, and if so, what are your thoughts on them? Are there any other devices I should be looking at?

Basically all I'm looking for is something to load movies on so that the kids can stream them to tablets while we're on long road trips. When I'm not using it for this, I may plug it into the home network to use as an NAS device, but that won't be its primary purpose.