Fairly solid so far, with a bunch of minor bugs that usually can be worked around and should get squashed in the next release. But, watching the latest episode of Masters of the Air, the display would black out (but with normal sound) randomly every few minutes. And not just for me. Several hits on the Apple site for the same thing in the same episode. Stopped and tried it on the Apple TV without problems, but moving from the goggles to a flat screen in a good movie is a major letdown.