Had another Foodsaver and loved it.  Replaced it with this unit because it the only one at the store at the time.  Wish I would have waited.  Sealing knob at the base is poor.  Feels like it's going to break every time I use it.  The sealing bar is a joke.  While you're trying to hold the bag in place and push the bar with your thumbs, the entire unit slides across the counter, making it almost impossible until it slides up against something to stop it.  The vacuum pressure is terrible.  If you don't get the bag just perfect in the unit, it will just keep running the vacuum without getting up to pressure to start sealing the bag.  There have been times I have had to try up to 5 different times, taking a couple minutes each time.  If I could find someone to buy this unit for even 1/2 of what I paid for it, I would get rid of it.