We buy organic as much as possible.
Tomatoes, potatoes, cauliflower - you really taste the difference.
Coffee, bananas - that's more to support fair trading small farmers.
Cheese, milk and milk products - that's if you don't want to buy "artificial" stuff with your food. (Though raw milk cheese is as good.)
We get less jormons in our beef/meat than in America; though we buy only organic sausages and cold meat. But there you really taste the difference!!! (Same story as with the dys' apples.)