That brand should be fine. Manufactures have to be careful these days. The "cheap" ones I'm talking about are the no-name ones that you can find in shops like the "reject" or "$2 shops". These kind of shops may import the goods without knowing (or caring) what they are really getting.

Looking at the Decor ones though, they don't seem to be very "air tight". The Lock and Lock ones have a rubber insert in the edge of the lid, which makes it air and water tight. You can also freeze them and they are dishwasher and microwave safe (but only to warm the food with the lid off).

haha, perhaps I should think about a career as a tupperware salesperson when I move back to Australia??