Most people are being very specific, but I’d say consumables in general. Rarely is a name brand food or medicine any different than generic. Often they’re literally produced in the same factory. Stuff that’s meant to last, generally a more expensive product will be made more durable (not always), but this isn’t a consideration with consumables. If it’s a one-time use or edible, I’m going with the cheapest option 99% of the time.
I agree with eating healthy, but if you’re buying cheese-it’s, as an example, the generic brand is equally bad for you as the name brand. You should still try to make healthy choices, but name brand doesn’t make anything healthy.