I could be completely wrong about this, lol so hopefully I dont get too many responses calling me an idiot, BUT...
From what I have come to understand EIGH is a fundemental play, they just have their shit in order so to speak, and CDIV is more of a strategic type of play based on the float and a couple of other factors.
Like I said, I could be wrong, I dont own CDIV, too expensive for me to get a sizeable position. But EIGH, im all in ;p