I have had the 140 for about two months now. There is a little bit of a learning curve. To lock the lid you must push firmly on both sides at the same time. You can not lock one side then go to the other because the first side will unlock. I fought that for 30 minutes before I gave up and called someone. Second you need to apply a little pressure in the center to help it get a good start on the vacuum. To me it is very noisy compared to my old food saver but nothing that you can't get used to. The vacuum is very strong and no waiting, the double seal is awesome. The pulse feature is something that is great for soft items that you do not want to crush. At this price point there is nothing that even comes close. I'm very happy with my purchase.