I actually like the Xbox One controller more than any other controller on the market right now. I think it's an improvement over the 360 controller in almost every way now that I've gotten used to it. My one gripe? When those batteries die, you get NO warning!!
At least on the 360 you'd get that swirling light thingy. On all of the 7th gen controllers, you got some indicator. I was playing Titanfall and in the midst of a great game and that controller died like it was taken out by a sniper!! I have a ton of rechargeable batteries on stand-by (from my Wii days) so I don't really need a charge and play kit. They seem to last forever but, like the Wavebird, there was nothing telling me I was in trouble. Sometimes, even the battery icon on the home screen is nowhere to be found! Hope they fix this via an update. Make the home button flash or something when it's time to replace 'em.