I have a summit mini viper. I got it through a pretty good trade deal, and was not sure if I would like climbers. I am a convert. I will say it is the only type of climber I have used, so I can not speak to other brands. I find it super stable. It is fast easy and quite to set up and climbwith. The rail around the upper portion makes climbing fast and very safe (both up and down). the seat is very comfortable ( I have spent all day in it, which I could no longer do in my more traditional hang on). I have heard good things about the Lone wolf brand but it would have been a little pricey for my meager budget. It does not fold flat but it is stable and quiet to walk with, especially if you have scouted several areas and prepared paths.