Razer Atrox XBox One Fight Stick!!!
Top of the line stick with Sanwa parts, fully mod-ready.
http://www.razerzone.com/gaming-controllers/razer-atrox-xbox-one
It turns out that Killer Instinct is tough on the Right Bumper Button on the Xbox One! Many online complaints that people have broken the right bumper. So, fight stick on the way.
Unfortunately, the controller that I broke is my custom-modded COD / GOW controller, so I have a good reason to repair it. Parts were $6.
Xbox one controller is quite a bit more complicated and more difficult to work on, as compared to the 360 controller.
Also, I noted that Xbox One controller has a chip from my semiconductor employer company! Nice!