I’m pleased to see I am not the only one who really likes them. I think the issue with the locks that people mention in the reviews is that you have to seat the lids very straight. Occasionally, I can’t snap one side shut at first but I just lift the lid and replace it and it’s fine. Doesn’t bother me one bit.I've got 2 sets and love them. Great that they all stack up and the lids all stay pretty much together. I very nearly got another set but then thought I was being stupid. I use at least one of them every day with something for my lunch, sometimes 2 or 3. Sometimes they go in the dishwasher and I've had no problems. Some of the locks are a bit harder to fasten than others, but none have leaked.
Strato, there are reviews on the page with the video I gave the link for. As mentioned, the later ones are not very good but the original reviews were much more favourable. One person says they have dexterity problems and prefers these lids! See, alisonwt and I know best!