@matt there are pros and cons to each.
Kiwi is everywhere and they have a lot of cheap generic products, and you save up points on the Trumf loyalty card. meanwhile, Rema 1000 has the Æ loyalty card, where you don't save anything up, but if there are particular things you buy a lot of, you can get some pretty good discounts on it. but they don't have as many generic products. Coop is old faithful, where your grandma would shop. not too cheap, but you'll find those candy drops she used to buy there. as for Meny, i don't get the appeal of their smaller locations at all. for me, that chain is about choice. their bigger stores have all sorts of foreign import products that the others don't have. but if you don't live near one of those big stores, what's the point...