Another vote for Summit. My first stand was an old early Warren & Sweat. Don't know if they even make stands anymore, but it was marginal compared to the Summit. I've hunted from API's climber and a Loggy climber, but was never as pleased with them as I am with Summit.

I bought the Viper when it made its debut. I imagine mine has to be nearly 7 years old now. Like Zach, I prefer the front bar. I enjoy the comfort of having the bar when climbing for a seat, and posistion the top section low when I reach my desired height, which allows me to shoot unobstructed both seated and standing.

Another plus while standing to shoot is that you can edge out to brace your leg on the bar. No need to look down to determine if you're getting close to the edge of the platform is a big plus for me. It really shines if you need to turn for an ackward shot, allowing you a very steady stance at an otherwise less than steady position.

The Viper is spacious, unlike some of the taco sized lock-on's I've been in over the years. It also holds my weight, (205 pounds), without so much as a creek, even in crooked trees. When and if this one wears out, which I doubt, I'll be getting another Summit product.