Hey!
For PACK EXPO this year, Dordan had an exhibit were attendees were invited to vote on which easy-open clamshell was in fact, the easiest to open! Check out the Packaging Digest here and the dorky picture of me below as proof!
It took me a minute, but here is the easy-open clamshell "vote" in presentation form. It includes an overview of the 5 easy-open clamshell designs Dordan developed, with photos of each prototype concept. Click here to download. Enjoy!