It's been a couple of months since I bought the Xbox One S GOW version and I am very pleased with it. Like the previous Xbox 360 GOW version, it comes with matching controller and custom sound when turning on and off the console and when ejecting the disc. As reported, it is much smaller than the X1. Here are comparison pics.
Here is a comparison with the PS4.
I was also lucky enough to purchase the Gears of War 4 Elite controller and obviously, you can feel that is made with better and stronger material. You would think it would considering the cost.
Here are side by side pics; on the left is the Gears of War 4 controller that comes with the console and on the right the Elite version.
The Elite controller also come with a hard cloth shell with extra buttons.