why did Bosch moved on from "VarioSoft" drums to "VarioDrum"s on their washing machines?

[wholelottared]

i still have an old Bosch Home Professional with the VarioSoft drum. i never thought about this before, but after checking the new models at the shop i was suddenly curious about this, so i thought i can ask about it here.

was it just for design purposes/to add something new, or was there actually reasonable causes behind it?

to anyone who doesn't know what i'm talking about:

old "VarioSoft" drums:


the "VarioDrum" that is still being used right now:


will wait for the replies & thoughts, thanks!!

 

[logixx]

I've heard that the "cheese grater" drum wasn't that easy on the laundry, thus the change to a different design.