I've had these for a couple of weeks and absolutely love them. The lids are easy to open and close; just push the button. While it's not recommended to lift from the lid, the suction mechanism is strong enough to keep the lid closed on the off-chance you don't have a good grip. The large containers are great for flour and sugar, as they come with cute little scoops. The opening to the container is large enough to easily fit a measuring cup and level it off. 
The brown sugar container makes keeping brown sugar soft a breeze with the included terra cotta disk. The container lids are easy to disassemble and clean. Make sure the lids are completely dry before putting back together so that you're not introducing moisture to the dry goods. I give these 10 out of 10! These are high quality containers and I'll be adding more to my collection.