accuracy is the most important thing. put a field tip in both lungs and the deer is still gonna die. more cut does help esp with poor shot placement. my brothers like bigger heads cause he usually shoot his deer farther back and ive seen three of his intestine shot deer die withing 75yrds. i like 1.25 cause that seems to be the most common and i think it does the job well kind of a happy medium. my other brother usues 7/8 cut heads and has had poor trails and lost two deer one of which we found 1/2 mile away a week later with a liver shot. we didnt push that deer at all came back 12hrs later with a bigger cut i really feel we would have found the deer but it still was the shot placement that hurt him not the head.