I have Tupperware and Rubbermaid containers which are years old. Decades even, in certain cases, I'm sure. And plenty of takeout containers from (mostly) Chinese restaurants, usually given with soup noodles, etc. etc. Always washed in the dishwasher, for all those years.
Then a friend was giving my some shit about the quart containers, when he saw that I had used 4 of them for my recent IP stock making, claiming, you know, how bad they are for you, blah blah blah. Interestingly, I did a little research, and of course BPAs and god-knows-what-else are bad for you, and certainly using these types of containers in the microwave is probably not great - though we don't own a microwave, so I don't have to worry about that, though pouring boiling hot soup into them is probably also a not-great idea.
Now, the Chinese restaurant containers, and most everything else made out of plastic and used for food, has a little symbol with a number in it, on the bottom, allegedly attesting to how the container is best recycled (or not, as the case may be). There are other symbols and letters on the bottom of containers too; you could spend hours looking at this stuff; the whole idea being that I'd like to at least start storing my food in the safest containers possible; obviously glass and stainless being at the top of that list, but not always practical for kitchen use.
So - where am I headed with all this? Oh yeah - I decided I was gonna replace all my old stuff, because a: it's old and b: It's been washed, in the dishwasher, like hundreds of times, and that can't make it any better.
So on to Amazon I went, and a buying spree ensued. I also started by looking at how various storage products were rated, on sites like Cook's Illustrated's, et al. And I started with these:
Rubbermaid Brilliance Food Storage Container, 14-Piece Set and these:
OXO Good Grips Smart Seal Leakproof Glass Food Storage Container, in various sizes.
Holy shit, both products are light years beyond the old Tupperware/Rubbermaid stuff. The lids are amazingly tight, that Tritan plastic used in the Rubbermade Brilliance is amazing, and OXO just generally makes stuff that I like; these glass storage containers totally fall into that category.
I threw out almost all of the old stuff (I'll keep a few of the restaurant containers, to give away leftovers for sure); but man, these products are game changers.