I have a Summit Viper and I have been fairly pleased with it overall. My only complaint is I'm not really a fan of the stirrups and I dislike climbers in general now due to the time, effort, and noise to get up and down a tree. If I have a choice, I'd rather hunt a ground setup, a ladder, or a lock on before a climber, but there are some situations where a climber is the only option or is way more convenient. I don't think you can go wrong with buying a Summit though.