We have ordered two sets (the ones with the photosensitive lenses) and I would be happy to share our experience when we get them. They, according to the order, are supposed to ship and arrive next week. I think these will be great for both Powered Parachutes and Gyros. I like the fact that you can download your flight onto google earth. I also like the fact that it shows the 'time' in heads-up (eye-up?) display so I will quit losing track of time while flying and not get in trouble with the boss...my wife ;-)
Mike