"no contest" might be a bit of an overstatement. I'd agree that there is no contest when it comes to quality, but this is definitely not the case regarding features. There are a huge number of features available from lenovo and other manufacturers that are simply not available from any mac laptop. connectivity is a total joke and I have no idea why they persist with the infuriating lack of ports, even on premium or "pro" models. no matte display options, faulty keyboards that take years to rectify (by reverting to a previous design no less) and not to mention the extortionate price of peripherals, total hostility to repairs. etc. etc. Carbon x1 is significantly lighter than a macbook air with a larger display, more connectivity and better travel on the keyboard.