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In order, my concerns would be (1) screen resolution, (2) battery life, and (3) internal storage. After experiencing high resolution screens such as Apple’s Retina and the screen on the new Nexus 7, I can’t go back. Things just look so much sharper and it is far easier to read text. Battery life is important on a tablet because the way they tend to be used - lots of video and streaming audio - takes a lot of juice. Internal storage is a must if you like to store a lot of music on your device, and especially if you like to play cutting edge mobile games. A single game can easily take up 4-5Gb of your internal storage. A less important concern is the CPU, but it still should be considered.