If this is already posted somewhere and I missed it, please feel free to direct me there. I'm considering the purchase of a Roamio plus and would immediately like to upgrade it. I could go 3TB but if I can go 4tb I'd prefer that. Weakness has upgrade kits but I'm a DIY sort when it comes to these kinds of things. Does anyone have an "official" word (preferably first-hand experience if possible) on what 4tb hard drives will work in a Roamio plus? Thanks!