That was one thing I was thinking about with regard to these food saver machines-what type of bags or whatever do you use in them??? I assume, without knowing, that they work better than ziplock baggies because a) they take the air out of the bag and 2) possibly, the plastic bag is stronger?? I always use what they say are the 'freezer' ziplock bags, but I wonder about how good they are. We have a huge freezer and I buy large packages of meat/cheese/etc., and always freeze them, so I think maybe I would use it......