Pro-Line is dead on in my opinion, I don't have but 12 years of tracking animals....I have seen good trails and bad trails with every style head out there....I got turned on to mine by my buddies in 96', they have always performed on MY set up...I kinda live by the ol' saying "if it ain't broke don't fix it".....After shot placement, I personally like the bigger cutting heads 2 1/2" Vortexand I have my set up rigged up for this....Big heads are not for every set up....