We have the Tilia from Costco, and love it. After a while the little rubber seal poops out, theywill send you a new one for free whenever you ask. One trick we have learned, for some things (trailmix for one) we put the item in a ziploc freezer bag, but DO NOT zip it shut, then put that bag in the sealer bag and vacuum seal it. That way, when you open it later you have a sealable container to keep the item in...
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OBG