1. Lenovo IdeaPad Yoga 2 Pro
Like the ThinkPad Yoga, the IdeaPad Yoga 2 can be used in four different ways. It ups the ante with a frankly ridiculous 3,200x1,800-pixel touchscreen display as well as a 720P HD webcam, 8GB of RAM and either an i3, i5 or i7 Intel processor. Not too heavy either, at 1.39kg. Expensive, but extremely capable.
2. Toshiba Kira-101
By no means the cheapest, but the Toshiba Kira-101 has a highly detailed 2,540x1,400-pixel IPS display, 256GB SSD, 8GB of RAM and an Intel i7. The all-metal magnesium construction only adds to the appeal. Expensive, but it feels as such.
3. Microsoft Surface Pro 3
The Microsoft Surface Pro 3 is technically a tablet hybrid, but it can act as an ultrabook. The detachable keyboard with trackpad, full Windows 8.1 experience and touchscreen make it difficult to ignore. It's reasonably priced alongside the Apple MacBook Air, too, and arguably as stylish and well built. Powerful, too, thanks to yet more Intel action.