Yeah, it can make sense. First of all, 99% of people can't make use of 15x the capacity. You are talking 500GB I presume, which is 800 hours of capacity. Most people have nowhere near that much DVR capacity, let alone that much recorded. Nomad can >only< hold things that are still on the DVR. And you only >need< to hold things you want to tote around on a portable device. Second of all, it means a rotating storage disc, which will make some modicum of noise when it's doing its thing. The flash drive will be silent. Now, if you do have a ton of DVR space >and< you want to carry a ton of stuff with you, then the 500GB drive makes a ton of sense. It's a bargain and, as I said above, should be power efficient as well. But if you're more "conventional" and think that 80 hours of Nomad-ready stuff is plenty, then the flash drive is a perfectly reasonable, inexpensive enough, silent, super low-power way to go.