Summary: It was a toss up between the Toshiba Z930 and the Samsung Series 9.. The build quality feels much better, the screen resolution is much better. I did find the keyboard easier to type on with the Toshiba over the Samsung. Another gripe I have with this machine is that the RAM is not upgradable... and it is single channel.. :( I still chose this over the Toshiba, even though the Toshiba is boasting the i7 with 6GB RAM that is upgradable to 10.
Summary: Samsung ultrabook has some serious issues: touchpad is terrible, would close windows, change size of window and text on its own and do all kind of crazy things. I was hoping this perennial problem with Samsung ultrabooks will be taken care of in new ones...but it was not to be. Further, you can not use usb 3.0 port while your ultrabook is connected to the electrical cord due to being too close to each other.
Summary: I researched this ultrabook vs other Windows machines and the MacBook Air. It's by far the best of the Windows machines if you are looking for an ultrabook (with other laptops obviously being more powerful but nowhere as sleek and light as this one). With regards to the Macbook Air, it's pretty much a toss up on the features you are looking for. Just the OS might be enough of a reason to choose one over the other.
Summary: I have spent many hours researching these Ultrabooks and narrowed it down to this, the Toshiba z930 and the Asus Zen book. the latter has some track pad issues and I don't like the sharp edges on it either. the metallic design is also a little too flashy for my taste. the Toshiba was a serious contender, but again the chrome buttons on the track pad are not great and the keyboard is too narrow for comfort, go type on it and you will see what I mean.
Summary: After extensive research and consideration, I've got this Samsung. The market is full of Windows alternatives and/or there is the MacBook Air. As an overall package it comes with the best trades off, according to my tastes anyway. Excellent battery life (7 hours in browsing/office load), a screen which is not a TN panel, light, amazing quality of the build and materials, and last but not least, the design is good I find.
Summary: The series 9 has one of the best interfaces I've ever used. The mirco-ethernet adapter is a bit fussy to work with, but much better than being a slave to wireless all the time. Battery life is quite good for basic tasks. Trackpad and gestures are leaps and bounds ahead of all other ultrabooks, and is comparable to Mac trackpads.