i've used the 4 blade 90gr. for a couple of years and have really good results. i think having the extra blade is a big advantage if you would happen to make a not so perfect shot you have the chance of nicking an artery or the lungs if your a lil off. i have made a few shots like this because i didn't stop the deer and landed my arrow a lil further back than i wanted and got liver and lungs, there was great blood and both deer at the end of my trail. it's just a preference really.