When my now 16-year-old daughter was 12, she got a Lyon & Healy 85E and we ordered two harp carts, the L & H one and a 6-wheeled one that was recommended by the staff of a harp store in a neighboring state. Her harp has to go down three steps to leave our house, and she has had to transport it over rough terrain from time to time. With the help of her teacher, she tried both carts and found that the Lyon & Healy cart was MUCH easier to use because turning it was so much easier. After four and a half years, she is still very satisfied with the cart.