Xbox One controller.
It has everything i loved from the 360 controller but improved features.

Gamepad has a screen on it but isn't very ergonomic when it comes to holding A and pressing R. Xbox is alright don't own a ps4 yet.

I own all the consoles and really, they are all great. The have minor flaws but all are upgrades from last gen.

Id say it's better than the Gamecubes by way of second analogue , z button being odd and better d pad. However if nintendo update the Gamecube controller I would place that one on top.

Xbox one controller is my favorite of controller of all time actually, the 360 controller was my favorite before and the xbox one controller is just that but.. Better XD

Yeah, they're both really good controllers.  It's actually a pipe dream of mine that Nintendo will make the NX's controller a redone Gamecube controller by adding another Z button and maybe changing the c-stick (even though I personally like it).

I'm so conflicted JJ... The title is "Which is the best controller/joystick?" but you also ask which is my fav... @_@ So I'll just answer both.

The best overall I feel safe in saying the PS4 is the best of the 3. It feels the most comfy to use.

As for my fav, I would say the gamepad. The screen opens up new ways to play games, which some games do make good use of it. And I can draw on it!!! So it gets my pick xD

I literally just compared them stick on top of stick and both the DS4 and Gamepad's sticks are the same exact size...

@OP: That's a very difficult question to answer. Most controllers are great upgrades from what came before.

The XBox One controller is one of the most comfortable controllers ever made, and it feels really sturdy and has a great build quality all around, but I never liked the asymetrical placement of the analog sticks (that muscle memory goes way back to the original Dual Shock :/ ), and the D-Pad isn't quite "there" yet. Also the fact that it still uses AA batteries instead of a built-in one makes it a little behind its time. You have to spend extra money to have rechargeable AAs at the ready for it. Finally, those analog triggers are the best among the current controllers.

The PS4 controller is almost as comfortable as the XBox One's, and improved most everything from the DS3. The trackpad is kind of a gimmick that has yet to find a "logical" proper use in games, but it still adds two buttons. The share button comes in handy and is a nice modern feature. It's a controller that, despite the few corrections made to the ergonomics, still feels like the PS controller I'm so used to game with. The triggers, while improved from the DS3, still lack resistence compared to the XBox One. But that's a very small issue. Unlike its very low battery life (can't game a day without recharging). All in all, a great modern controller. 

The Wii U Gamepad is awesome for its screen and the way it is used (especially remote-play and inventory/map access in games), but really bad when it comes to ergonomics. I can't for the life of me understand why Nintendo decided to drop the analog triggers for their controllers this gen. This controller is great to look at, but sadly not really comfortable. I still prefer it to the wii-mote, because I prefer analog sticks to motion controls (For standard games of course. VR is an entirely different story). It also suffers from ridiculously low battery life (5 to 6 hours at best). 

The Wii U Pro Controller is, next to the XBox One's, one of the most comfortable controllers. It's only sad that they dropped both the analog triggers and the rumble. Overall, it's a good yet standard controller that doesn't push anything above what came before other than being one of the most comfortable to hold. Best battery life of the bunch, but that is expected for a controller that's as barebone as it is.

I would say the XBox One is the most comfortable and has the best build quality, while the DS4 is the one with the best features overall . Then comes Nintendo's, which are a mixed bag. The Gamepad's screen is an awesome idea that is sadly hampered by a rather bad form factor.

I think the best controller would be a mix of the XBO and PS4 controller. Unless they can come up with a design that has the qualities of both, and incorporates the Gamepad's screen while still managing to be as comfortable as the XBO controller.

I'll be in the minority here, but screw it I love the GamePad. I find it comfortable, surprisingly light for it's size and fefeatures, qnd brings a lot of potential functionality. I really liked the uses in Splatoon, Wind Waker HD, and Xenoblade Chronicles X. And off TV play is really awesome. Also I personally love the feel of the joysticks. PS4 and the Pro Controller are tied for second. Xbone's is third for sure for me, frankly a step back from the 360 in all but weight.

DS4, Wii U being the worst ever when it comes to analogue sticks.