They work perfectly 95% of the time, but that 5% I'm doing the dance of closing the AirPods case multiple times, hovering the case all over the phone, unlocking/re-locking until it decides to work again. This was the case on my 6s and 11. No feedback or errors, just frustration. My friends also enjoy their AirPods but acknowledge my experience isn't out of the ordinary.
At the gym packed with people using AirPods, my pair will sometimes cut, for just a split second, and is a constant reminder that I'm using bluetooth. I'm not disputing that the overall experience isn't better with AirPods, because it definitely is, but for me it hasn't been as smooth as promised. Especially at the cost of my headphone jack.