I didn’t use them a ton, but they were “alright”. I had my own, but never felt the need to dig them out of my bag. I mostly read, ate, slept, but when I did use the IFE, I plugged my iPad (with content downloaded) into the HDMI input on the IFE screen (on the A35K). House headphones worked fine and the display was large and crisp. FWIW, the touch screen function worked better than on any plane I’ve been on before. We actually just got home this morning.