I didn't think there'd be that big of a difference. Even the standard one that is for sale now does 720p, and I think 960p as well. Those are both technically HD resolutions. The hero hd does 1080p, but I would probably use the lower res anyway. 1080p requires crazy amounts of data to upload/download.
I'd love to have it for something like a trail lap at Majestic, and also for some moto days like we are doing at Savannah.