I have a choir member whose 6th grade child has been taking flute lessons for a couple years now. They have been renting a flute from the local music store but are now interested in buying her a decent flute of her own. She asked for my advice - so I'm asking you.

What would be a good flute and a good price for a serious 13 yr old? New? Used? What should be looked for or avoided?

Thanks in advance for your help.