I have shot Axis Sts 340s for a few 3 years now. I switched from 2514 XX78s. But out of my compound, not a recurve so I don't know if this is valid for your purpose.
I have shot 8 or 9 deer, 1 bear, and 2 turkeys with them.
I broke 1 on a doe that I spined and she rolled over and flopped until it snapped.
I broke 1 on the bear. It went through the oppisite shoulder blade and stuck in the ground and sheared off at the shoulder when the bear jumped.
I broke another one on a doe that I shot through both shoulder blades. The fletching caught a large tree when she ran between 2 trees and snapped off at the fletching. The point end sheared off at the opposite shoulder 4" up from the broadhead.
I don't know of any other arrow that would not break under those conditions. Other than maybe a sleeved arrow, but I am sure it would bend beyonde repair.
I am not real concerned about what happens to a shaft after it has complete penetration. Just that it does not fail on impact or during penetration.
I will continue to shoot the Axis. I have found nothing better.