Wii U thumbsticks are horrible in my opinion. Very slippery! Xbox 1 sticks are nice in the Dual Shock 4. I had the hard plastic ones in there but they were wayyy slippery. Stock or Xbox One sticks for the win.

Edit: Just checked now, SCUF now sell their thumbstick seperately!!! I have a PS4 SCUF controller and the thumbsticks are great but I got the extra tall ones for better aiming on COD. Might order some standard sized dome thumbsticks to install in my stock Dual Shocks...

I agree. Love the WiiU thumbsticks. My thumbs rest on them way better than on the mushroom head Ps ones. They get really uncomfortable in long play sessions imo. Never had that problem on the wiiU.
I like the xbox thumbsticks too though.