We declared Google's new flagship tablet, the ASUS-made Nexus 7, to be the best slate that $200 can buy -- as well as one of our top choices for students -- and while it's hard to beat the price, we're going to give four of them away regardless! This week's contest is all thanks to NVIDIA, the folks behind the quad-core Tegra 3 that powers the Jelly Bean tablet and turns gaming into a smooth and pleasant experience. These little guys are definitely worth a grab, so add a comment to ente