If your hunting elk, I feel a well tuned fixed is the only way to go..however, a grim reaper does well on deer and speed goats. I’m sure fellas have done very well with elk also with these heads.
Deflection can be an issue with an expandable and hybrids for that matter.( quartering away and quartering to shots.)
I have shot 6 animals in 7 years with SOLID Broadhead’s . Complete arrow penetration on all, but one animal. Shots ranged from 18 yds.. and beyond. The 18 yd. shot was the non- pass through hit rib and opposite side shoulder. Still buried to the fletching.
Depends on what state also.