My man. i feel the same exact way,first time i witnessed a literal perfect controller is the xbox one.
I love it man, I occasionally just see it laying on the counter waiting for November 22, and just grab the thing and pretend to be playing a game for a few minutes. It just feels so nice. Grips are perfect, feel premium. Like the grips you'd find on an expensive third party controller used for tournaments. Angular handles make it fit perfectly in your hit, feels so natural. The rounded triggers make it feel more natural to put your fingers there, and pull the trigger, and if you pull from the side it's easier to make small, burst pushes. D-Pad is a real improvement over the 360, I'm not sure if I'd call them amazing, but they're passable. Buttons feel nicer and the Xbox Logo lighting up is fucking sleek. Plus the weight just feels so nice, not heavy as the 360, but not light. Has enough weight that you can feel it in your hand and it feels nice.
Overall, since people here already brought up the Dual Shock 4, it's much better than the Dual Shock 4. The DualShock 4 feels so cheap, the rubber on the sticks feels so spongy and cheap, and the triggers aren't as good as the 360/One. A big improvement over the 360, and just because it's better than the alternatives, it's the "best" and "perfect" controller as far as I'm concerned.
I haven't even tried the Rumble Triggers, since I haven't been able to play a game, have high hopes for it, and even if it doesn't live up the hype, everything else is so good it wouldn't change my opinion that the controller is the best, all it can do is raise my opinion on the controller.