another vote for the Summit Viper SS in terms of comfort. one day i went after work to catch prime time...sat down...woke up and it was just light enough to see!! i missed the entire hunt! i do not think i could sleep in ANY stand without the bar of the viper or similar. but ive made several 4hr sits and time seems to fly. if i didnt have other priorities limiting my time and had food and water i could make it all day. thinking of summit trophy system for a hang on to have in my prime spot. its a basic platform hang on with a summit trophy chair for the seat. the viper doesnt make much noise and is easy to use and set up...but packing it through the brush can make noise and climbing up a set of steps would be even easier for them spots you wanna sneak into...