Dell XPS 15 is getting a lot of mention these days so I thought I should check that out.
http://www.dell.com/en-us/shop/productdetails/xps-15-9530
My god, what an ugly looking thing.

The build quality doesn't look nice at all, and then on top of that I would need to run Windows 10. Oy. OSX is such a nicer interface to look at, and if I'm going to be staring at an interface for hours and hours I want it to be something beautiful and refined. OSX has a lot of nice artistic touches. I have to use Windows 10 at work and it is quite an unpleasant experience. It can get stuff done certainly, but for me OSX and the Apple build quality are the reasons I stick with this company. The UNIX underneath is wonderful.