I like Lock & Lock containers. They seal well and do fine in the freezer.
I also like Lock & Lock containers its locking function is long lasting.
I was all tupperware back in the 70's - and then I started with some rubbermaid - now - it's whatever I find that I like and does the job I want it to do - I buy it. Tupperware and rubbermaid as well as the rest - do get worn out from use. I don't mind replacing my plastics - they go through a lot!