In addition to size, price is also likely an important consideration. Here's a quick breakdown of pricing for all Nexus and Galaxy Tab 3 models.
To sum up those numbers, the $200 Galaxy Tab 3 7.0 tablet with 8GB of storage is the cheapest option of the bunch, not counting the Galaxy Tab 3 8.0 Wi-Fi/LTE version, which also costs $200 but requires a wireless service commitment. For $30 more, you can get the 16GB Nexus 7, which has double the storage of the Galaxy Tab 7.0.
Samsung Electronics Co., Ltd, a global leader in digital media and digital convergence technologies, today announced the introduction of the GALAXY Tab 3 – 7-inch tablet featuring sleek design and enhanced capabilities that bring capabilities that bring better performance and multimedia experiences to your fingertips.