New research from Mintel says that concerted efforts retailers have made to improve store brands, including offering several tiers of "generics," has paid off, with 44% of grocery store customers saying they believe store brand products are better today than they were five years ago. And just 19% say it's worth paying more for name-brand products. Some 34% in the survey say they don't feel like they are sacrificing anything by buying these store-branded goods.