Bought too many for internet cafes, so we're talking about heavy use. Absolute compatibility with games on PC and PS4.
Yes, the keys do have problems, but the company provides a 2-year warranty, so you can return it to your supplier and they will provide you with a replacement from a new box.

After 7 months of occasional to moderate use, the left joystick moves on its own from left to right and the D-pad barely responds when pressed...

I have bought 3 Nacon controllers. In my personal opinion, they are the best and most affordable controllers on the market

I have had the controller for 3 and a half months, it has fallen twice and it fell normally without any damage, but for the past month I have noticed that the joystick stays slightly up when you move it up, and in Fortnite, it walks slowly. If you have the chance to get this or a regular one, I would recommend the regular one unless you want it for aesthetics, then yes, this one. (Something I forgot to mention is that it has a button at the back that adjusts the brightness of the color, for example, blue). It makes noise when you press the buttons, which is not ideal

+Fascinating buttons larger than normal
+Scandals
-Smaller levers than normal
-Strange and annoying pressing of L1 R1

Unacceptable!!!
After 1 month, the L2 broke.
edit 23/7/2021
The controller works fine except for the L2 button. I consider it a good solution as a second controller.

He was working fine until R2 and then L2 started malfunctioning on their own, so I removed them and now I only use it for YouTube. To play, I bought the original... expensive but cheap ones always break

Very good for its price but after a few months, my R2 broke and stayed alone downstairs. I took it to the store where I bought it to repair it under warranty and after 3 weeks, they told me to send them a message and I went and got it, I played it and it was exactly the same. BROKEN

After using it for two weeks, I can say that I am very satisfied. The cable is quite long at 3 meters, its texture is not slippery at all, meaning it does not slip from your hand even after hours. The buttons are silent and of good quality when pressed, and the left and right joysticks are equally smooth to handle. As soon as you connect it to the console, it has a constant blue light that makes it look nice without bothering your eyes. Also, I should mention that it works properly with PS remote via computer and with Android mobile via USB adapter, as well as with all Xbox Live Game Pass games. It is recognized properly with other platforms such as Steam and various emulators, fully compatible. It is worth the 30 euros I paid for it, but if you can find the original V2 version at a good price up to 40 euros, prefer the originals, of course.