Whilst I dont rate the Co-op very highly, I rate ASDA even less. It is cheap and crap, I will not be going. I am really quite annoyed that ASDA are coming to Marple!!!!
The biggest argument in favour of Asda in Hibbert lane was that the co-op was expensive. It pretty much ticks all the boxes to see Asda taking over from the Co-op. As for quality, supermarkets share suppliers, so when it comes to selling *rap (and that's swearing) it's across the board. When the horsemeat scandal hit, you will recall most supermarkets got caught out, IRC only Morrisons and Iceland had a clean bill of health.
Supermarkets are a compromise, you will find better frut & veg, better bread, better stationery, better fish, better meat and better booze in Marple than ANY of the supermarkets. If Asda do clothing you'll find better clothes throughout the town but alas, we're all a bit lazy at times and we will shop at Asda when it comes.