When someone offers me "butter" and it's really fake crap margarine. Not even close.
Supermarket ricotta --- Polly-o, Sorrento, any brand that isn't the most wonderful and exalted Calabro, which is not readily available in most supermarkets.
Supermarket ricotta is downright foul. I will not eat it. I'm sorry, I just can't do it. It tastes disgusting to me. It is the very first thing I taste when someone offers me a piece of lasagna made with it. Just cannot.