I most shop at Aldi as it is the closest, so I can walk there every other day or so, there is a co- op and a tescos which is furthest away. I do do some of the local speciality shops but they tend to be closed when I arrive home. As for the store ambience, I found in the past that it varied between stores and depending on the area. There are certain things they do very well, and a few things they don't do or don't stock the brand I like. I don't think their fish is very good and as
@Spinney says I wouldn't touch their frozen peas or sweetcorn. And I don't like most of their crisps and nuts ranges as they seem too salty for me. I do like some of the speciality food that they occasionally get in, but find the opposite when they stop stocking something you like, dried mango last year but then it came back, and currently tomato purée.
Coop are good for the last minute forgotten milk or icing sugar last night, and the discounted bargains in the evening, don't always get the timing if that correct.
I don't like the really enormous shops where you have an aisle of different baked beans to chose from, and when you realise you have forgotten anything that you need to walk half a mile to the other end of the store
I like the fact that they don't have that many staff and so you get to know them.