You use whatever you like, and what tastes good for you. If you’re concerned with authenticity of the source, just search around a bit.
Honestly, you really only want to use olive oil in certain recipes where the flavor actually comes through, or raw. Ignore all the terrible recipes sites that use it in EVERYTHING. Don’t use it for frying anything, for example. It’s got a low smoke point, and you want a more neutral oil with a higher smoke point for such things.
Also, Costco’s more expensive olive oils are pretty good.