As a tupper rep - I would definately say go the tupper -I go into many kitchens and I am finding over and over that people will buy the cheaper ones and they still get the weavels and rodents in them.
Someone already said - have a party - that is truly the best way to get any tupperware, its it discounted or even better free!!
Tupperware for me too. I haven't had anything else that's been properly airtight
though for spices I often keep them in tin so they're not in the light
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