I've had my original Foodsaver vacuum / thermal seal unit for a little over 2 yrs., it began to (apparently) fail to vacuum air from my bags (heat-sealed fine though) so after a couple hrs of trying to figure out if there was something I was doing wrong (I cleaned moisture trough and inspected seal gaskets) I just gave in and purchased a second (newer generation) Foodsaver unit. I got home and attempted to use the new unit to seal meatballs, this unit failed to vacuum as well. The motor on both units worked fine, just no ability to vacuum air from bags. So, after a couple of hrs of investigating and cursing I stumbled upon an interesting continuity observation. I noticed that some of my Foodsaver (brand) bags had a dimpled texture to the exterior surface of the bags, and some were smooth (untextured). I also noticed that the bags with the spanish label translation tended to be the textured bags and the ones without spanish translation on the bags were the untextured (smooth outer surface) bags. Long story short, the textured bags failed to vacuum everytime and the smooth bags vacuum-sealed every time. Now my problem is that when I search for the smooth (non-textured) bags at Target, Walmart, etc... they cease to exist. I've been opening boxes at many stores (I know that's bad shopper etiquette) to find the smooth bags but they don't seem to exist. I wrote Foodsaver from their website (twice) explaining this issue but have yet to hear back from them. I wonder if they're aware of this manufacturer-flaw issue and choose to deny it's existence. I have several boxes of the textured bags which won't work and can't return them because I haven't the receipts. Needless-to-say, I'm not terribly impressed with Foodsaver.