It's a different price point than Lenovo. Much cheaper. They are good ultrabooks.
Regardless of the CPU you choose (e.g. i5 has 8 GB, but it's not fanless), all 12 inch models have Intel components only, including the wireless card. It's one of the few laptops that truly runs well on Linux out of the box with zero glitches.
Only a few classic Thinkpads are better, with even good ACPI support for battery discharge events. But that's really rare, and does not make much difference if you run a HAL like UPower to abstract your ACPI-battery.