HP is looking to fill in every gap in the tablet market, from affordable basic tablets, to high-end business tablets, to gargantuan 12.3-inch monsters. Known as the Pro Slate 12, this massive tablet and its smaller 7.9-inch Pro Slate 8 counterpart both look like over sized versions of the HTC One (M8). Both tablets boast some average, if somewhat lackluster specs, especially considering their size and price, $449 for the the Pro Slate 8 and $569 for the Pro Slate 12.