best for spark transfer; dull or sharp edges?

I don't know if this has been said already because I only read the first three posts but the shape of the electrode is going to partially determine the shape/size of the spark...yes hotter spark/higher energy spark influences as well..duh.
So while the electrode rounds off the closest part is what's going to spark and that's going to be a smaller/narrower body of energy...but does it matter and how are you measuring it?
If we are seriously looking for hp from plugs...you may as well piss up the splitfire rope.. just dont catch your pants on fire saying you gained power. Jk

Best of luck.