Predators have a sharp curl just at the rim. Some refer to it as a bead, but it's completely uniform with the concavity of the wing. Bead like in feel, not in design.
What's your opinion of those big z stamps?
I loved the flight of the Predator but just couldn't get over that uncomfortable rim feel. It did irritate my index finger the way a bead does.
I'm not a fan of the Big Z Machete stamp. But then again I like the Big Z Roach stamp so to each their own.