I do not think anyone makes a bad head anymore. I have used Zwicky 4 blade on a 250 pound russian hog, it was devestating, blow through, dead hog real quick. I ahve grown to love Ace standard heads as well. I have killed with authority using these heads. I ahve also had great success with Stos. Shoot what you can sharpen the best and get the easiest. They all fly well and are well made. I ahve had NO problem with wood arrows and 125 grain heads, no crazy FOC or anything, just plain woodies and old fasion 2 blade heads.
Good luck with your search.
Bob.