We're getting DD a scooter for her 3rd birthday next month. I think we're settled on either the Micro Mini or Maxi, but I can't decide what would be most age appropriate. Their website makes it look like the Mini is the obvious choice. I think some HBers have reported outgrowing it quickly though? Are there any differences other than handle bar height? Are the steering and ease of riding the same? I hate to spend so much on something that is too tricky for her now but don't want her to outgrow it in six months either. Thanks in advance for your help!