The Surface Book "Performance Base" refresh brings a faster Core i7 CPU, a GTX 965M GPU for twice the graphics performance, and a larger battery. All worthy upgrades on a svelte package that is still very expensive. Reviewers are praising it for what it delivers, except that maybe Microsoft could've waited just a little while longer and ship with Kaby Lake and a Pascal GPU instead.
Over the past few weeks I've been using the Samsung Galaxy TabPro S. The name isn't catchy, but there's a lot to like about the hardware in this slim 12-inch Surface competitor, including the AMOLED display and fanless Core M CPU on the inside. Samsung also bundles a keyboard cover with this device, because these sorts of key accessories should be included in the purchase price.
The Surface Book is one of the most compelling products Microsoft has released in several years and for the first time in decades, the company's first laptop. The Surface Book is an early glimpse into the future of hybrid computing devices.