Without having tried it on a very demanding game, it is very good. The Switch recognized it immediately. It is heavy (without this being a problem), its size is good for large hands. Something that some may not like is that the buttons are very "clicky," so I don't know if someone wants to play in a very quiet environment if it might be a bit annoying (I don't know if it would be suitable for streaming either).

Awesome lever for its price that also has 2 extra buttons on the back. The cable is also very helpful due to its size

I have bought the blue, red, Zelda, and Mario. 4 unique controllers that have nothing to envy from the originals (maybe only the wireless/wired). It has a 3-meter cable, fast response on the buttons, sturdy construction (my dog took one and tried to bite it).

It's worth it for 20-25€!

As for the build quality, it looks good. The buttons are quite "clicky" with a nice feel, a firm dpad, and relatively hard buttons. The joysticks are convenient and the slight indentation they have provides accuracy in movement. A plus is that it also comes with an extra taller joystick for FPS games that require precise movements. The two programmable buttons on the back may accidentally be pressed during gameplay (I don't know if I will personally map them, but it's good that they exist). The cable is quite long, although I haven't tested it with headphones yet. It definitely doesn't have features like rumble and gyroscope, but for 25€, I don't think it will disappoint.

It is the best controller on the market for its price. Very comfortable grip, good quality, and it is the first controller that you can plug in headphones. The cable is very long and the buttons on the back are very useful, although sometimes I accidentally press them but you can remove them or set them to do nothing