Neither. There is no best. "best" is a subjective word. Subject to the view of the user. So, This question is entirely useless and only results in people disagreeing with each other for no sensible reason. To each their own. Stay out of someone else's preferences.
Tough! But I choose Queen over LZ by a slight margin due to their variety of songs those break genre boundaries dan full participation of all members in individual song writing. Other than that each LZ's personnel has slightly more excellence in musical skill, Except Freddie vs Robert, I have to side w/ Fred, His showmanship is not comparable.