Not sure really, maybe the color that action, I alway like square bills anyways. But All I can tell you is when you throw that sucker out there and bring it back with a swift retrieve it will catch fish! I think that I have proved that with all the pics that I have posted. I try to locate suspended bait and throw it about 10 to 15 yards passed them and that is when I do the best. It is also awesome around structure and cover, but cat past it and get those reaction strikes!