The main difference here is the one to two handed operation. The 360 gun offers a one handed operation with short distance to the cleaning object, i.e. Bins, where the user can hold the bin and rinse it at the same time. The long lance is a traditional lance extension you would find on high pressure washers. It is a two handed operation with a variable fan jet which can be used for more demanding cleaning tasks, ie. cleaning of flooring stones.