I don't necessarily need more KE (although I do bear hunt some). The main reason I'm looking for a heavier arrow is to make my bow more efficient. A little more weight will give me more value in KE than what it costs in velocity up until the tradeoff limit is reached. Thats where I would like to be. This added weight will hopefully make my bow the quietest it can possibly be as well.

Basically I'm just continuously tinkering...Want my bow to be as perfect as possible so my confidence in it is High.