I bought a Summit Viper SS a few years ago figuring I would use it in an out of state hunt and never needed it. It sat in the basement and I decided to finally give it a try on a recent trip to Il. In short I love it and can't wait to use it here in my home state next year. My only other experience with a climber was of course the Baker back in the old days. I remember feeling like it was ripping my guts out on every climb and I was one of the few who never fell with it. The only good was it made my abs stronger. Now the Summit...what a dream to climb with. It is quiet, fast, secure and simple to use without any strain. It is so comfortable I was able to sit all day in it and it is light and packs easily so hunting with it on your back is easy. It does make a bit of noise when on your back and walking through the brush but going slow and picking the route will help. I give it an A+ and wish I had tried it out sooner.