I have used these a handful of times but found that the lids weren't very good quality, if I wasn't concentrating fully (which us mums are guilty of sometimes) then I'd forget to 'snap' the lid on, resulting in a sticky pear mess when I opened the fridge. I much prefer supermarkets own brands of weaning pots, much cheaper and better quality. I also use ice cube trays to freeze the purees, and then when they are frozen I pop them out of the tray and into a sealable freezer bag and write the contents and date on. This saves more room in my freezer ad I can make more purees, it also means that I can mix a cube of, say, pear, apple and sweet potato and nothing goes to waste.
To conclude, an expensive, poor-quality product. I love Annabel's books but these pots are no good.