> Japanese cling wrap
Careful with this one. As I understand it, most consumer cling wrap in western markets is polyethylene film, which is made without plasticizers. But Japanese cling wrap (and the stuff at Costco) is plasticized PVC film, and those plasticizers may well be soluble in your food. The market is supposedly shifting toward safer plasticizers, but I personally would rather not place soft, plasticized plastics in prolonged, direct contact with my food.
I watched a video about Japanese cling wrap, and it showed the box has a plastic lip on the part of the lid that's used to cut the film at the desired length. Here in Europe all the rolls I've ever bought came in a paper box which just had a serrated paper edge that gets dull after using it three times (which is not surprising because paper bends easily). I think that probably makes a bigger difference than the material itself. Eventually I got a plastic case for the wraps and I just throw away the cardboard box, but I know most people here use the paper box and would probably be amazed if they tried the Japanese one.
UK: ours usually have a thin serrated metal edge.
Odd, I’ve had the opposite experience… back home in Australia the boxes came with metal edges, but here in the UK (Scotland) they all seem to be plain cardboard. If the metal ones are sold somewhere I’d be very interested to know where I could find them!
I just own a standard catering one and it always bemuses me how people suffer with the shit sold in supermarkets