I was just now watching a TV programme where a character said "I'm concerned when we switch brands of coffee".
Ignoring the choice of:
switch brands of coffee // switch coffee brands
Is it correct to say brands (pl.), because to me both the above and:
switch brand of coffee // switch coffee brand
sound fine, or at least, I do hear both. Which is "more correct"?
I feel as though I can justify either: the sentence speaks of switching to a singular thing, but then it switches between plural things.