With some devices, a larger hard drive can actually slow down processing, especially if the CPU isn’t equipped to handle heavy load spikes. With satellite TV DVRs, that’s generally not an issue. The processors used by both Genie and Hopper are typically fast enough to manage the max stress during simultaneous recording and streaming (i.e., there’s rarely any delay or pixelation). So, with satellite DVRs, it’s always in your best interest to get the larger drive (of course, provided the price is right). Currently, the Hopper with its 2TB drive is well ahead of the pack. As the Genie (1TB) integrates more efficient components, expect that gap to slowly shrink.