I've used both over the last 3 years. The X1 Carbon is ahead in terms of build quality and you have access to Lenovo's various maintenance options. The XPS has

I've used both over the last 3 years. The X1 Carbon is ahead in terms of build quality and you have access to Lenovo's various maintenance options. The XPS has better Linux support. Personally I found the Trackpad on the XPS 13 terrible to the point it was unusable. If buying again would probably go for the X1 Carbon.