Summary: I've owned the Sony VAIO Duo 11.6 for five months and it's already been returned to Sony 2 times for repair. The trackball Sony decided to use instead of a track pad is a bad joke. The trackball is impossible to use. The concept behind this tablet/laptop with Intel i7, 8 gig's ram, SSD, etc. is outstanding, but Sony design engineers didn't think through the design and really blew it. CONCEPT GREAT...DESIGN/EASE OF USE AWFUL BUYER BEWARE!
Do not buy it. Has a factory problem with the screen.
8 February 2013
Summary: Do not buy it. It seemed to be the solution for work and new trend, but finally you will not be able to work at all. You will lose more time trying to repair it. First and last time that a buy a Sony... I miss my loyal Lenovo.
Pros: Fast. Has keyboard included and Touchscreen, should be a solution to work with a new trend.
Cons: The screen has a factory problem at the left corner. It will constantly point the corner menu by itself. Also sometimes the screen blocks. It won't let you work.
Summary: When the tablet is on battery (DC), the refresh rate changes to lower than 60Hz automatically which may not be noticeable under the naked eye but is discernible under a camera (screen flicker). This can potentially strain your eyes without you realizing it. There are many videos of the Sony Duo on Youtube and you can verify for yourself. When AC power is plugged in, the refresh rate changes back to 60 Hz automatically.
Summary: I purchased this so I could annotate lecture notes during class and later print them with my annotations included. I bought this from a Sony store near me and first thing I noticed was how rickety and unstable it was. The screen wobbled a lot when it was deployed but the writing on the screen looked great. I opened my .pdf documents and annotated them, occasionally saving my work.