Am.Test Kitchen did a 'study' of plastic storage bags for the freezer. zip-loc's, zip-loc's w the extraction hole if you will, regular plastic
Food saver and the Weston ( 400 $$ ) system.
they found that after ( paraphrasing here ) 1 - 2 months in the freezer ice crystals in the bag penetrated the plastic and the contents were t
then subjected to 'freezer burn'
the Weston system w the thicker 3.5 MIL bags did not do this and lasted .....
I got the Weston system 3 years ago or so to begin my SV studies. none of these bags have failed me after I understood how clean and
dry the bags needed to be at the seal.
Ive had stuff SV in my freezer thats over a year old: seal good, tastes fine.
so cooking and saving for a brief period of time is one thing, freezing for a long time is another.
i also store my green coffee beans this way, but not in the freezer: just a very cold basement.
so the thickness of the bag will determine who long the contents might keep, + / -