I have had a Foodsaver machine for several years. Over that time I have tried to use some other brands of rolls and/or bags. None have kept the food as fresh and perfect as the Foodsaver brand bags and rolls. The Foodsaver product keeps the food in perfect condition in the freezer for a much longer period of time. When I open the package the food is as fresh as when it went in. NO other product has come close to the same effective freshness seal.