I have a summit viper and love it. I would say it boils down to how far back your are going to hunt. My summit even though it is very light gets heavy on those long hikes and you will fell it in your shoulders for a while. Another thing I like is having the bar that goes all the way aroung. It makes me feel safer because I don't like climbing trees. Good luck on your purchase. Dont forget a harness and to tie the top and bottom together when hunting.