I have got a good deal on a new 27", i7 4ghz, 16gb ram, 256gb ssd, M390 gpu. I know much more about Apple's laptop line. So if we compare to the 2016 15" MBP, how good is the screen (brightness, viewing angle etc), SSD speed and GPU? Any major bottlebeck I should be aware of with the 27"? Does it run very hot (hate fan noise)?