I use a fixed BH, main reason is I hunt bear, deer, elk and moose. Another reason is I feel their is less chance of BH failure, b/c no moving parts. Yet one more my results have been positive with fixed heads, so why change???
I agree it depends on your setup and game to which head would be best suited. Give some these fellas that info, many have tried both and tested both...they' ll point you in the right direction

!