Depends on your setup. If thats adequate either head will do fine. Pros to Killzone Maxx is that you get a big entrance hole in case you dont get a pass through. Pro to Swhacker is if you catch the shoulder blade you have a better chance of getting enough penetration to kill. Not guaranteed but a better chance. Con to Killzone Maxx is if you get shoulder unless you have lots of energy it won't get the penetration you need to kill quickly. Con to Swhacker is if you dont get a pass through you have a much smaller hole. If you make a good shot with a complete pass through on either head the animal will die a quick death. Not an easy decision but shoot what you have confidence in.
