I needed a drawing tablet for my high-end desktops (iMac 5K and custom Windows 10 tower). With this 12.9" iPad Pro, I can use an app to pass pen input to the PCs, great for apps like Photoshop and Mudbox (Duet on iOS). Other devices could do this too, like a laptop with pen input or cintiq tablet, but I can find several ways the iPad Pro is a superior companion device to my high-end desktops. The screen is incredible. It is very bright and ProMotion makes every movement silky smooth. Daytime-use was no problem in this Florida Summer cookout weather. The iPad Pro is surprisingly light and thin (it feels lighter than my old iPad 4). It looks and feels like you're drawing directly on the screen, and the mobile apps for drawings and productivity are better than any other tablet this mobile. It sounds better than expected too - loud and full sounding (better than MacBook Pro). When I need to access my desktop, the same remote management apps I use for my clients and personal desktops works with iOS. In a single long-tap, I can remote in and control my desktop (over a personal hotspot, too).
I use this iPad Pro for note-taking in meetings. The Pencil input for markup and notes is better than my old paper notepad. As a developer, I've been testing iOS 11 on it for a few weeks and I love the way it handles multi-tasking and split-view. Drag & Drop on this near 13" screen is desktop-level functionality but totally optimized for touch-mobility. It took a moment to get used to how many new interactions there are, but it feels completely natural now. Some think pointer-input is required for it to be a "pro" device, but personally I find the Pencil to be more accurate than a Mouse, and the touch interface to work better with my fingers and those types of 'pointers' than an old cursor. Every app and interface is designed for touch and gestures, not a mouse. Overall, the 2017 12.9" iPad Pro is the perfect companion device to those with a high-end desktop that need some portability, a device that is the best at what it does, and offers simple ways to extend the functionality when needed. In a lot of ways, if I don't need my desktop's raw power, I see this being my primary device for most everyday computing needs.