We weren't convinced LG's Z160 convertible was skinny enough for Ultrabook status when we went hands-on at CES, but the Korean company has run with the title and launched the Tab-Book Ultra in its homeland. The 11.6-inch slider runs full-fat Windows 8 on an Intel Core i5 CPU in the top-end configuration (GH5WK), and much to the joy of data-hungry users, packs an LTE radio in addition to standard WiFi. Those who want a more traditional l
