Depends. What are we hunting here? If it's deer then I don't consider KE all that important. They just are not big boned animals. A pass thru is a pass thru. I don't care how far the arrow sticks in the ground after doing so. That being said, I try to achieve as much speed as possible while getting the bow as quiet as necessary. It's a compromise, with the edge going toward quiet. So normally I end up with a hunting setup shooting around 255 to 265fps. This year I got a new Martin SlayR and am happy to say my speeds have jumped to around 282fps with a hunting setup and 293+ for 3D. That with a bow shooting 55lbs at a 27.5" draw. Happy days are here at last.