the only reason that i didnt look at summit, api or buckshot is that ive got some shoulder problems and the api bowhunter i had was just too much work. i was looking for a sitdown type of climber, vs. one that you use your upper body to climb. the north starr has a sling and the gorilla has a bar that you sit on. i used to use a redhead similar to the gorilla, but the frame was too narrow.