I currently live in Chattanooga TN and will be moving to Tampa area, currently I get my tv and internet from local utility who has a fiber to home service. I have a 4 tuner Cisco whdvr with one client box, will I need 2 BHN whdvr's to replicate this? How much will it cost me over the cable and internet package to have 4 or more dvr tuners? Can I add external HD? Current dvr has a 500 Gig HD, how do BHN dvr's compare? Would I be better served by Fios?