I've had the Thinkpad X1 Yoga with OLED screen for about two months now and I have to say, it's lived up to expectations.
The screen is unreal. It's just so good it's not even funny. The colours are vivid. I'm seeing parts of the gamut I never thought I would on a laptop monitor. The contrast is incredible. Black on an OLED screen is jet black, virtually indistinguishable from the black bezel that surrounds the screen. There is no motion blur, either. It reminds me of the best CRTs from way back. I wish I could get a desktop monitor using the same technology, it is a night and day difference.
The rest is classic Thinkpad, a refined formula well executed.
The keyboard is lovely, typing is a delight. The size and shape of the keys are perfect. I previously used the Surface Book and Dell XPS keyboards and they pale in comparison. I love using the Touchpoint (little red nub) over the trackpad. It always saddens me the technology never got wider adoption. The trackpad is great, nice size and texture and physically clickable.
Horsepower-wise, no problems. Spec is as good as it gets for a Skylake-based machine (Intel has since moved onto the next generation called Kaby Lake). 16gb and 1TB SSD is available as the top configuration. Everything hums along as smoothly as you'd expect. There's a basic Intel 520 doing the graphics. Nothing to write home about, it will play some basic games and can handle all other productivity type stuff fine.
Given how port poor the new Macbook Pros are, I've got HDMI, Mini Display port, 3x USB 3, headphone jack and micro SD. Sad I couldn't get a full size SD but I'll live.
The stylus is an unexpected star. It can be tucked into the body, hiding on the right side. I make a lot of diagrams and annotations and the stylus has been an absolute godsend. Lenovo thoughtfully provides an app called WriteIt that lets you annotate directly onto whatever your screen is displaying, then saves it. I use it at least once a day and continue to be impressed by its utility.
Size is great, there's a 14" screen in a compact body. The extra inch is noticeable, especially given my miserable eyesight. The Yoga flips over on itself so you can use it as a tablet. It's especially nice for reading documents in portrait mode. Flip the screen over and then hold the machine in portrait orientation and it becomes a great reader. The OLED screen makes a huge difference here because it boasts even better viewing angles than IPS screens, allowing everything on the screen from top to bottom to be crisp and legible.
The only downside - battery. The OLED sucks power and unfortunately, I can squeeze out maybe 5 hours, certainly below average for an ultrabook.
Well ... Lenovo finally delivered something that is about as close to perfection as I could possibly expect. Kudos to them for an amazing bit of work. The OLED is not cheap and in very short supply but if you're willing to pay for it and can find it in stock, it's one of the best Windows laptops out there.
Couple additional notes on usage:
Making the OLED fully functional - When I first received the machine, I flattened and reinstalled. When putting all the drivers back in place, the default things that Lenovo System Update / Windows Update installed did not make the OLED panel fully functional. There is a driver package called the Dependency Package that didn't install properly so I pulled it again from Lenovo's support site and installed it manually. The OLED can switch between different colour gamuts like sRGB, AdobeRGB (they call it photo mode), etc, by switching colour profiles on the fly. I typically run the machine on sRGB or AdobeRGB because the native profile for the panel is pretty wild in terms of colour. This functionality relies on a combination of the Intel display driver, the OLED panel driver and the dependency package to be fully functional. You have a little bit more control over the settings using another bit of software called Lenovo Settings as well.
System Update not foolproof - Used to be my favourite utility for getting the machine up and running again but I've found it's not foolproof. It's worth using Lenovo's support website + its system auto-detect software to be fully up to date on drivers.