The Nook HD+ has a 9-inch screen with a 1,920x1,280-pixel resolution (256 ppi) -- the same as the 8.9-inch Amazon Fire HD. The Nook HD+ starts at $269 for the 16GB version. It jumps to $349 for the 32GB model. It comes in one color ("Slate"). Both the Nook HD and Nook HD+ have expandable memory.