FIOS just became available in my neighborhood. I want to sign up, but I'm wringing my hands over what DVR option to choose . The DVR's from Verizon offer a maximum of only 20 hours of HD recordings with no possibility of adding an external eSata drive.. As an experienced DVR user, 20 hours seems totally inadequate to me. Surely, Verizon must recognize this as a serious limitation. Assuming they do, do they have a recommended solution(s)? If I choose a non-Verizon DVR, like Tivo, should I buy this before I sign up and have Verizon hook it up as part of their FIOS installation or should I have Verizon do a 'normal' installation and then switch over at some point in the future. If I go with the Verizon DVR for now, does Verizon have plans for addressing this DVR shortcoming sometime in the future?