This one is a little bit of a hot take, but bottled lemon or lime juice is good for consistency. While fresh will most certainly be better, you may inadvertently juice a bad lemon/lime and potentially ruin a dish. Bottled juices can last a bit longer in the fridge.
Speaking of canned tomatoes, there can be a huge difference between brands. If canned tomatoes make up the bulk of the recipe I prefer to spend a little extra.