Regarding the B&O plasma screens I would advice to treat them in a rather over cautious manner then vice versa. To me it seems terribly user-unfriendly, but optimal is to make sure that simply nothing gets on the screen (besides the usual dusting). Wrong stuff on the screen and the couting is ruined - have seen what a couple of
unintended droplets of seemingly harmless window cleaning liquid can do - or, in my case, a few fingerprints made by little little fingers having a contact with candies! Also, it seems to me that the manuals kind of steered away from this rather relevant subject of cleaning... (Maybe, in the meantime, B&O improved on this and the coating?)