@Scmbradley @researchfairy Yeah the AH bags are similar in quality (I have one of those too), the major issue I have with them is that their carrying capacity is very low; they have at most half the capacity of a 'big shopper' bag. A partly related issue is that they are a lot more "fixed-shape"; they don't deform that easily.

I've found the Lidl/Aldi style bags a lot more practical because a) they deform easily and so can accommodate a large variety of items that would seem to be oversized, and b) the capacity is basically "one full side pannier" so I can just take two of these bags, fill them to the brim, and lift them into my bike panniers wholesale.

I'd say the AH bags are more suitable for small groceries on foot, whereas the large bags are more suitable for transport on wheels (bike, car, whatever).