The super-slim Spectre 13 may be the star of HP's lineup right now, but a couple months back it unveiled a much bigger laptop that's aimed at a slightly different part of the high-end market. That laptop is a 15-inch version of the Spectre x360 — a laptop that sounds a lot more like a typical Windows 10 machine: it has a touchscreen, and its display flips around 360 degrees to be used as a tablet.