Not sure about the choice you typically get in a US supermarket, but speaking from experience living in Europe, it's really best to turn your intuitions upside

Not sure about the choice you typically get in a US supermarket, but speaking from experience living in Europe, it's really best to turn your intuitions upside down. Most vegetables and fruit just taste way better, the further they are from their common variant, since there was less chance to select taste out of them. So, for example with tomatoes go dark, yellow, oval shaped, 'deformed' ('oxen hearts' a.k.a. cuoro di bue). With carrots go yellow or dark.