Currently have a few year old iPad 2, and wanted to get either a new Galaxy Tab 4 10.1, or Tab S 10.5? Is the "S" worth the extra money, Best Buy has the Tab 4 on sale for $299, and the S 10.5 is $499 for 16gb or $549.99 for the 32gb. Im just curious is the S 10.5 worth it over the Tab 4??