Try both and see which you like. Bourbon is very subjective. I for one and many others love the ECBP which I just purchased and started drinking it right away.
Prior to this ECBP, I had the EC18 many years ago and it was good. I actually would not have try the EC12 but from all the discussion on the ECBP, I had to try it and it is wowing me!
You can probably find tasting notes here and see if you would like it base on what people have experienced. I do that often on things I have not try, reading people's tasting notes.