The DS4 Wireless Controller features familiar PlayStation controls, and incorporates several innovative features to usher in a new era of interactive experiences. Its definitive analog sticks and trigger buttons have been improved for greater feel and sensitivity. A multi-touch, clickable touch pad expands gameplay possibilities, while the incorporated light bar in conjunction with the PlayStation Camera allows for easy player identification and screen adjustment when playing with friends in the same room. The addition of the SHARE button makes utilizing the social capabilities of the PlayStation system as easy as the push of a button. The DUALSHOCK4 Wireless Controller is more than a controller; it’s your physical connection to a new era of gaming.
DualShock 4 Wireless Controller for PlayStation 4 – Crystal

the thumb sticks are more rugged and have better grip on them,
Update: 12/4/17 This controller still functions as if it were new, even with heavy use which includes me dropping it on multiple occasions. It has outlasted three gen 1 controllers.
Bravo Sony!
Update 7/11/2018 controller still functions great!
A must controller for PC gamers!,
Lightweight, great response time, love the LEDs that change colors , touchpad is also good and triggers are responsive enough for feedback.
Now I switched back to PC gaming and this is great. I’m running it with “DS4Windows” which is a 3rd party app to make the DS4 controller work on Windows. It’s great! you can use it either wired or wireless and charge from PC with the micro-usb cable it comes with.
I played WWE 2k18, NBA2k18, COD: WWII, and South Park with it. So far- great! Highly recommend if you use controllers for PC gaming.
Left analog stick wears out in months,
The symptoms are that at some specific angle, in my case at the very least slightly to the left or right of straight forward, the stick will not respond properly. This will result in the game character for instance suddenly slowing to a walk from a run and back again, resulting in very stuttery movement. And over time the issue will get worse, with larger deadzones.
Sony will replace the controllers under warranty within one year, but the warranty process is inconvenient to say the least. You have to mail the controller to them, and you might not get it back for two or three weeks. Without a controller, the Playstation system is unuseable. There are several guides out there that detail how to replace the sticks yourself, but they require cracking the controller open and desoldering the stick to solder a new one in its place.
When the stick is behaving normally the controller is great, but with two in a row going bad like this I will be looking into a third party controller for sure.