GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 1GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 2GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 3GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 4GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 5GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 6GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 7GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 8GoPro HD Hero 2 vs. Ion Air Pro: Who is action cam king?  - photo 9