Ooh, burrata... It's the best!
Waitrose is the only store locally that sells it and I have a Tesco, Sainsbury's, ASDA,M&S, Morrison's, Lidl and Aldi.
I would consider M&S to be more posh than Waitrose not based on their customers but quality of their food and speciality and holiday food variety. It is far superior to what you find in Waitrose.
I would say Waitrose is more exclusive as their cost keeps the riff raff away. Even their markdowns on short dated merchandise isn't much for value conscious shoppers.
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