I really like that these containers nest well together easier for storage. The lids also nest although only when laied flat. The seal is very tight with no problems leaking which is a huge plus! I one thing I'm not a fan of is the locking flaps are hard to keep all 4 out of the way trying to put the lid on. If the hinge was a bit stiffer they would stay out of the way while locking the other flaps