That is true. But it's been like 40ish years. I suppose I could grow a third head tomorrow due to pretty much continuous use of the red Tupperware lunchbox I started using in first grade. I'll let you know if that happens.

While it's certainly possible, particularly with the yellow pitchers. I would be surprised if the square/rectangular containers were manufactured before 1980. My mom was a "Tupperware Lady" from like 1979-1984 or '85 and I remember the change to the mustard yellow, orange and reddish brown color scheme and then the pastel/almost light mint green colors of those square containers on the right. The pastels were later and might not have been until the later 80's or maybe even early 1990's (we still got the catalogues and some containers even after mom stopped selling it). I've use Tupperware from the time period my mom was selling it pretty much continually (I'm in my later 40's). My family has no issues which could be attributable to lead or heavy metal poisoning.

I use the plastic. I have some glass Pyrex containers that I like. But they get heavy, particularly when full of anything liquid.

I like the Rubbermaid Easy Find Lid containers. The big box stores usually have very good deals on multi-piece sets this time of year. If you want the really good ones, go with the "Premium" ones with the "flex & seal" lids.

One thing I really like about these is that the containers and lids are fairly standardized. There are 3 or 4 sizes of lids. The containers each lid size fits vary by depth. So you get a wide variety of sizes with very few different types of lids. Everything stacks well together. The lids click together and containers nest for easy container storage. The bottom of the containers click into the tops of the lids for storage when the containers are full.

I've had a couple of sets for at least 6-8 years. The only time I've had issues is when I've dropped full containers straight out of the freezer. Sometimes the containers crack (which I'd expect to happen more than it does). I've lost maybe one lid and three containers that way.