Concerning the unit itself, the only criticism I could make him the distinction of pixels is when one relatively close approach of the screen. It's frankly annoying when used (and using) like me a smartphone with Retina display. But since we're supposed to find us reasonably distant from the screen, we can say it's not a major problem.
Regarding the OS, it is also stunning. iCloud has been a breath of oxygen for Apple devices, especially for Macs that are now truly connected together easily. This simplicity is illustrated by basic everyday things like asking his phone to remember sth, and see the computer remember it too, so that nothing can escape. The heads in the air will appreciate. Joking aside, the included software on a Mac rather well thought out, the Finder has many similarities with Windows Explorer, and for people who have never had a Mac, it is no trouble to do, I knew everything from day one. The keyboard is very quiet, stylish enough with the backlight. The trackpad is accurate, the screen gets dirty too quickly it is true, but the supplied cloth will do. The start of the MBP is fast but not lightning, as more hard disk is loaded, the unit is more slow, but hey, this applies to all computers. An external hard drive is necessary to my senses for Time Machine, and remarkably thought that restores the OS in no time. Reinstalling Windows is to lose three days, reinstall Mac, at most 30 to 40 minutes without NO data loss.
In short, a powerful computer that is honestly the price. Autonomy, design and flexibility are its strengths.