I spent some time with a couple of Blades when we were in SF pitching some VR tech - one of our potential tech partners works closely with Razor, and had a ton of their gear.
Before I talk about the hardware: do you want to run OSX (as your primary OS) or Windows? I prefer OSX, like the Unix roots, involved in iOS development, and when I have the need for Windows (for dev work), then a VM gives me exactly what I need, in an easy to manage mechanism.
I'd also add, that in terms of companies, it's likely you'll have a better support channel with Apple via their storefronts. I love the idea of being warrantied for 3 years and my interface being a store that's 30 minutes away. No shipping, no dealing indirectly through a distributor, etc.
So the hardware is pretty awesome

I'm a nut for good design, and it's as slick of a design as I've seen on a gaming/high performance Windows notebook (Sony notebooks I always thought were beautifully designed).
It's fast, the display is very nice - the touch option didn't make any difference as that's not how I'd use it. For our VR demos, I actually prefered the native 1080p display, the super high res had some odd clipping (possibly from scaling?), but the framerate from the 970 was excellent as you'd expect (though we were surrounded by desktop, multi-GPU beasts, so it was probably the slowest windows machine in the room

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At one point I was driving the director UI and had it on my lap and the fans surged indicating it was getting warm - I think the design of the fans/vents create a real airflow issue if you're using it in your lap (vs. the MBP design with the rear slotted fan outlet).
The keyboard was very good (backlit, would prefer a more neutral color, some of the other options like Alienware let you set different backlight colors). As usual, the trackpad was notably worse than the MBPs (I haven't used a force touch model yet...) All the system IO was incredibly quick as you'd expect from a modern SSD based setup.
Here's the bottom line: with the Razor, you're spending a fair amount on the design/form factor. There are cheaper or faster options from Asus, MSI, etc., so it really depends on how much "value" you assign to the aesthetics. I don't mind admitting, I assign a good bit, and if I were buying a Windows notebook that needed high CPU and GPU performance, this would be the machine (it almost was!) With Apple, there's only one [legit] source, so you get (and are paying for) the better design whether you want it or not.