Why is there no product in the Topline range that combines all the features and makes buying different types superfluous?
I would like a Tupperware...
...that is 100% leak-proof like click & lock
...that is microwave-safe like the Micro range
...that comes in about 3 sizes, with only the depth varying so that the lids are interchangeable
...which is rectangular and stackable so that it fits in the fridge to save space.

I would call it All-in-One and personally I would buy a dozen of them and throw all the others away.