If the TMK is your go-to load, shoot it. A well placed shot with a TMK is FAR better than a poorly placed shot with a "hunting" bullet. Remember, Berger was just another "target" bullet at one point too. I'd expect the tip of the TMK to initiate expansion better than a HP would... who knows.
On the other hand, If you want to try the ELDX, rock on my brother. Just make sure you get plenty of practice in and are confident in your shot placement.
t