This is a long running debate in many fishng circles on what is the best choice. Functionally, it may not matter one way or the other, but from an aesthetic standpoint there might be a preference. That being said, I like both of them in different applications. For ultra light to medium gear I like the cork(bluegill, crappie, bass, walleye and such) and EVA for catfish and above. I'm not making reference to the cheap foam stuff that manufacturers put on their rods, but the good stuff that you get with custom builds. I have noticed in custom build galleries most people go with EVA designs for heavy duty and cork for lighter applications. Very few people use cork with heavy duty standup gear. Thoughts?