I'm not from Manchester, but visit there several times per year. When I visit, this is usually the supermarket that I go to. Located on South Willow, close to Newbury Comics, this is a great supermarket that offers fair prices and fresh produce.
It's fairly large for a supermarket, but easy to navigate and find what you're looking for. The people that work here are OK, but not overly friendly. There's plenty of parking, but it's not the funnest (yes I can make up words!) parking lot to drive around in.
If you're looking for a good place to buy groceries..this is a good choice.