Ultrabooks

I saw a list of notebooks published at this Ultrabooknews site. It lists the "True Ultrabooks" and "Ultrabooks Alternatives" lists.

The definition of what an Ultrabook is :

• Sizing that enables ease of portability. 11.1″-13″ being the main target screen sizes. 1-1.5KG being the target weight.
• SSD Storage
• Fast boot, long standby, fast resume.
• Not a Netbook

My favourite would be Asus & Lenovo at the current time.  Samsung is also looking more attractive as time goes by.  What is your favourite Ultrabook?