I've got a X100e. The hardware's alright, but the linux compatibility is awful. Ubuntu 9.10 worked well enough, except it wanted its wireless drivers to be manually installed, and it crashed every time it autoslept.

10.04, wireless worked out of the box, but crashed when you adjusted the brightness, or did anything with ACPI. Installing the proprietary drivers let me adjust brightness, but it still doesn't like sleeping. And now the headphone jack doesn't work.