This list claims to be updated for 2017, but it misses some reasonable entrants like the Thinkpad X1 Carbon which NotebookCheck reviewed at 91% score, and according to the display check for the WQHD version, that one should score even better (better display, better battery life).
Interestingly, the Top 10 ultrabooks list does include the 2016 X1 Carbon, albeit without a touch screen, thus technically not really an ultrabook
I really don't understand why the Macbook Air is compared with all these Laptops. The Air always was crap. I'd love to see how these laptops are rated against the Macbook Pro Retina 13 inch.
Everyone who is looking for a very good subnetbook will compare it against Apples system. It just weird that this casual notebook is seen as a benchmark for devices that even have a dedicated graphics card and really good/interesting specs.
I'm sure the XPS 13 wants to be a Macbook Pro competitor - not a "Macbook Air competitor".
November 2013 update. Here you will find the current best subnotebooks reviewed by Notebookcheck in the last few months. Our list of top models is regularly updated, maintained and commented on and should assist in purchase decisions.