Hair color!

hello pretty ladies!! I'm looking for opinions! so I've been thinking about changing my hair color for a little now since I'm just feeling that change and I'm not sure what to do! I'm a natural blonde who's been dying her hair black for probably about two years now, so I'm stuck between letting my hair grow back to blonde or changing to an auburn color. ( my natural blonde is like a dirty blonde but I don't think I have a picture since it was a few years ago I started dying it again )