The issue of sturdy makes me thing of the Fujitsu Toughbook. Your requirement for wieght removes the possibility the unit may have enough case strength to make it not feel flimsy.
I need to get a sturdy new 14"+ ultraportable (ideally around 2.1kg/4.6lbs, not much more) with a good bright screen - for Photoshop work - for a long trip. An external monitor is out.
I have lots of PC sofware, so I don't want a Mac. Plus, the Macs are either 12", 15" or 17". The 12" are light but too small, and the 15" too heavy.
I thought about the Z series Vaio's, but they don't have X-brite screens. The Samsung X05 and X10 feel too flimsy. The bright screen Fujitsu S6000's are only 13.3".