I'm a huge fan of the rocket steelheads. Since they're only 1 1/8" cut, there's little resistance and they'll zip right through the animal.
I've only taken 2 elk with them, both around 50 yards, one a complete passthru, the other with around 20" penetration. One animal made it 60 yards before dying, the other around 180 yards ( but only because I pushed her too soon after the shot).
I'll have no reservations about toting them again next year for the hunt.