I bought one of the first HSS models, mossy oak/orange reversible. Have felt very secure in the tree. My brother two years ago used the cheap spaghetti strap harness and hated it every day we hunted. He really liked my HSS and bought one last year. It is a much better system. Have only used the HSS and never any reason to try another. Would purchase another for the price it is worth it. I got the Pro Model.