Trying to decide which would best suit my needs. I know the built in processor is dual with the 68u over the single with the 66u. The 68 is currently $135 and the 66 is 89. I get around 500 mbps with our cable modem currently. Couple of phones, a computer, and 1 fire stick will be about the only wireless devices that will be present. The blue iris pc, Roku tv and Xbox are all hard lined in. Does the 68 justify the price difference in my situation?