If you will be using it mainly for quick clean-up jobs, a small 1.5 hp model will do just fine. They are also easy to store. Medium sizes, such as the 6 gallon size, are still easy to maneuver and they will hold more debris than the smaller versions. Models below 10 gallons tend to be louder and easier to tip. The large models, those more than 10 gallons in capacity, are best if you want something for your garage or workshop and will be cleaning up large spills. While they take up more storage space, their larger capacity means they don’t have to be emptied as often.