Depends on your application really. A-Frames are excellent for larger game in penetrations and damage but might not expand like you would want on deer or smaller game. Partitions work good on game far out in moderate energy but will fall apart on game close up and high velocities. Corelokts are good on deer size game at 100 or so yards but accuacy in all my guns was not was I was looking for. I emphasize my guns and what I was looking for.