This is a great refurbished buy.  Mine was delivered very clean with almost no signs of wear.  The keyboard and touch pad look total new so I am wondering if they actually replaced them.  The 1920x1080 display is very sharp and bright with good contrast.  I work with Visual Studio set to a small font and it's very comfortable.  Mine has the i7-4810MQ instead of the spec'd i7-4900MQ but after checking the benchmarks there is practically no difference in performance.  The battery that came with mine easily let's me run 2+ hours.  It's a very heavy and large laptop, not something for the frequent flyer.  Better to think of this one as a portable desktop computer which is how I use it with a Dell docking station and 3 screens.  One of the attractive features is that it is very easy to service.  Take out two screws, the bottom slides off, and you have easy access to the empty memory slots and two drive bays.