Like most I've come across some other attempts to Clip & Close. If so I'm going to count not on. For several years I only buy this brand. There are countless size and shape differences, sodas you will find the most suitable for any purpose. And you get what you need, individually and have to buy any sets, where one does not need half. So can maybe be more expensive compared a jar, but no one buys forcibly to the only cabinet belastet.Für me therefore a very good price-performance ratio. I've never had a defective item which had not fulfilled its purpose. I take every day in my food with you to work or freeze a precooked. The lid close even after what felt like 1000 times dishwasher still like the first day. I have never leaked anything and some I beware upside down on. Comparisons when heated in the microwave, I did not because I reject microwaves. Some foods, especially tomato, discolor the plastic. But that does not affect the further items and traces can now times not avoid. The series is also made of glass with plastic lid, which would certainly be healthier. But I do not too heavy to transport. Natural scratched glass and does not discolor even. From me a very clear buy recommendation.