I agree with Owly on that one except that I try to avoid cans. But chopped tomatoes (and frozen veggies) are a livesaver for small families too. I'd have to go shopping every other day to keep purely fresh produce in my home. I opt for fewer trips to the store and eating some things from tetrapacks and jars and the freezer. As long as they're organic and don't contain additives, the only dif might be a bit of nutrients. And that not might even be an issue when you consider how far fresh produce travels to get to store (in the US, an average of 1500 miles), losing nutrients with each passing mile.
"Right is right, even if no one is doing it; wrong is wrong, even if everyone is doing it." - St. Augustine