Very well actually! 🙂 I'll just list the pros & cons I've noted so far:
Pros:
1) Very light and beautifully made. Quite sturdy. It flexes a bit, but that's what carbon fibre is meant to do, making it more resistant to cracking if dropped.
2) Keyboad is superb, the best I've come across. Even better than my MacBook Pro's.
3) Touch screen is very good. Quite responsive. It adds to the Windows 8 experience.
4) Full HD display is gorgeous. Eye popping picture, and wide viewing angles.
5) Start up time is amazing. Takes only 3 secs to switch on, and 1-2 secs to wake up from sleep. I never imagined Windows to ever beat Mac's start up times, but it's happened.
6) SSD is quiet.
7) Battery life is amazing. I've used it for 5 hours at a stretch, and about 20% was still remaining.
8 ) Sound is pretty good for an ultrabook of this size. OF course, for music purposes, you'll need an external speaker.
9) NFC works well, in transferring webpages, pictures etc. from the ultrabook to my phone. I'm yet to figure out how can I do vice versa.
Cons:
1) Track pad is a bit frustating to use. It's invisibly divided into left & right mouse button, which takes a little getting used to. When I'm swiping across the trackpad, it sometimes annoyingly goes to the next open window. Sometimes, it doesn't register your input. I'm told an update will come from Sony soon.
2) Because of the full HD display, the windows are effectively "upscaled", which looks like SD on an HD screen. The apps display well though.
3) During installation of updates, the fan noise was quite loud. Thankfully it's quiet during normal operation.