I would love to have HD capability along with the other features contained in both of these decks, but I am worried about the cost of a 3910-5910 level universal player that also handles HD-DVD formats. In fact, maybe I should consider the Toshiba or its equivalent AND the 3910 or the 5910 and replace both when (and if) one of the manufacturers comes out with a new universal deck that can play everything (DVD-A, SACD, DVD-V, CD, Blu-Ray, HD-DVD). Given the cost of the first wave of universal decks when they first appeared, I am guessing that my trailing edge approach will mean I won't get one for several years.