If you're looking for productivity-focused, big screen, low cost, high speed, and durable laptop, Samsung Chromebook 4+ 15.6" is excellent.  Additionally, it is light in weight, has long battery life, and has extra antivirus protection.  This Chromebook deserves a 5 star on these features. Its Amazon's webpage describes the above features well.  In my review, I'd like to discuss its screen, ergonomics, and its entertainment weaknesses.Mine is a 15.6", which is only $70 more than the 11.6" inch version.  If the 15.6" inch meets your size needs, I strongly recommend getting the larger screen.  Like some of the other reviewers (mostly on the 11.6" as of 1/12/20), I agree the screen has color tone challenges when viewed at non-optimal angles.  At an optimal angle, this Samsung screen is sharper and brighter than my PC's high-quality Viewsonic flat screen. When viewing non-optimal, the color tone gradually changes, to become bleached white or dark, depending on the angle. After adjusting the angle optimally, if the user's head remains steady, then this screen is excellent. If user's head moves, this screen requires frequent manual adjustments.I enjoy watching videos on this 15.6".  Additionally, when working on documents or spreadsheets, the larger text size on its larger screen can offset some of the viewing angles challenges.  Overall, the 15.6" sizing can offset some of the other reviewers' critiques on the 11.6".On the downside, other than its larger screen, this Chromebook fails as a web entertainment computer.  First, music played on its bottom-placed speakers sounds awful. My 3+ years old tablet with Dolby Enhanced audio and with tiny front speakers in the front sounds better on both music and words. Samsung sounds flat and dull on music.Second, this Samsung lacks a touchscreen, which is more fun and saves time.  And it lacks a flip-top design that can convert to a giant touch tablet.  Lacks a time-saving, vertical-scroll-down wheel.  Its cursor touchpad helps create typing errors.  The tough skin is slippery (but may withstand accidental drops), and a textured outer skin would grasp better.  Weak on many ergonomics features. Human time saved through ergonomics is more valuable than microchip-speed time savings.Software apps may later add on to Chromebook's initial low price.  For example, the free Excel app for ChromeOS is view only, and charges for editing. Interestingly, Chromebook also runs a Linux module.In summary, this is a large screen, lower cost, high speed, productivity-focus laptop, and a 5 star.  If one wants entertainment and ergonomics capabilities, this is a 3 star.