I find myself getting most of my groceries from Walmart nowadays, but thats really only because my Amex card gave me Walmart+ for free, so free delivery. Price wise it normally beats everything except some stuff I get at Pricerite.

This reflects my xp though. Harris Teeter, Whole Foods, Safeway are just always too expensive and never really worth going to. Giant is only good for its weekly coupons but those are usually good deals.