Everyone has to do what works for them. But, I would place big money on the fact that you have more storage room than I do, though...Personally, I make a note of which stores have the lowest prices on the things we like. And when I'm at that store I get a decent supply of that item. I'm not shopping at every store every week, but working them through a rotation.
I know, for instance, that Publix's prices on organic cane sugar are better than Kroger's, YDFM, or Whole Foods.
I go to Kroger for pasta, dental floss, organic lemonade, or other items that end up being pretty close to free when they're on sale with a coupon.
I go to Whole Foods for the 365 cereal bars and their one day sales.
YDFM for produce, spices, yeast, flour, whole grain mustard.
I'm not sure about regular price on Greek yogurt because I only get it when it's on sale. And for broth I either make my own or use the better than bouillon (which is cheapest at YDFM and not bad a Publix).