Personally, I like to shop at Food Basics, Independent and GT Boutique (they have veggies & fruits). I will go into town (Ottawa) to Costco to get some things (Thanks mom!).

BUT...

For dairy items, we shop in the US every 2nd week (as we're 35 minutes from the border) at Price Chopper. If you get their advantage card (free), you save on gas as well. For every $50 you spend at Price Chopper, you get 10 cents off a gallon.