Well first, all USB drives are hot-swappable. I have NO idea why they list that as a "feature" of one and not the other.
The "Essential" is just a hard drive in a box. If that's all you need, you could just buy a drive and a box and BYO. It looks like the "Dual Option" is about the same thing, it just comes with backup software. For $3 I'd go for the latter, the hardware looks to be about the same.
The "Essential" is just a hard drive in a box. If that's all you need, you could just buy a drive and a box and BYO. It looks like the "Dual Option" is about the same thing, it just comes with backup software. For $3 I'd go for the latter, the hardware looks to be about the same.