Not sure whether to get 256, 512 or 1TB. I will be using it mostly for watching videos on youtube and streaming music and video from my plex server on my NAS. If I can save money and get away with the 256GB model, then that would be optimal. But I'm not sure if there's anything else I may need to consider. I don't want to short change myself and be limited on what I can do, but also don't want to spend too much for the larger storage. Would like some recommendations from you guys.