Although I love the new controller, I've had two issues with it already, whereas having the same DS4 controller for my PS4 for 7+ years and no issues.
One issue was minor, but annoying. My Square button kept sticking, but literally just used a tissue with some hand sanitiser on it, rubbed it around the button and it worked fine.
Other issue was the R2 button losing it's 'springy' feeling. It was very loose. After checking online, the issue was that the spring that's found inside it must've broke. Opened up the controller and the spring was nowhere to be found, I was actually very confused, it was literally gone! Swapped in my DS4 spring and all is fine.
Still a brilliant controller though.