I've used the XPS 13 (the Windows 8 version, with a 1440x900 screen) as well as the X1 Carbon (touch and non-touch). The X1 is a better machine overall, though most users find the XPS to be better looking.
My biggest complaints with the XPS 13 are the screen (terrible viewing angles) which won't be the same in this developer edition, and the trackpad, which has abysmal palm rejection and multi-touch gestures.
In a never-ending quest to find the MacBook Air equivalent for users who refuse to use a Mac, the X1 Carbon is the closest I've found.
My biggest complaints with the XPS 13 are the screen (terrible viewing angles) which won't be the same in this developer edition, and the trackpad, which has abysmal palm rejection and multi-touch gestures.
In a never-ending quest to find the MacBook Air equivalent for users who refuse to use a Mac, the X1 Carbon is the closest I've found.