Taking my Surface Book on the road tomorrow. Office, iCloud, Visual Studio, maps, (dongle) GPS, Corel Creative Cloud, and every app I've ever bought is on it, except the Mandarin lessons. All works. Production machine. Fast. The screen is spectacular. It is late evening, and the colors and resolution are very easy on my tired eyes. When detached, the screen is lightweight and actually fun to touch. I don't wish for much more - maybe an SD slot that recesses fully, and a GPS, but I truly have a sense that I am getting premium value for the premium price.