I hesitated with another model of the more expensive brand but I do not regret my purchase. The differences are: no automatic cut bag but I know how to use a pair of scissors one level welding (unlike the item description) but I do not know what would serve me another level a single mode vacuum but there is a button to stop the cycle before the end for fragile products: I tested for chopsticks, oops, you really stop before failing to get pancakes that never regains its shape. at least it proves the power of the machine. In summary, very easy to use: an automatic cycle button (suction and welding), a stop button of aspiration (welding is done automatically), a single weld button, a button for turning on empty containers (a small tube is provided). I completed the purchase of plastic boxes, (for storing leftovers is nickel) rolls of bags and jars (great for salad and the little grated for example). I tested the evacuation of a county kilo in small portions in plastic bags: they are in my refrigerator for a month, the last portion out yesterday was like the first day. The only downside is the noise, my cat has still not used! But it does not last long.