Help- ds nearly 5 is scooter mad and uses his mini micro every day rather than walking. But now his little sister at 2.5 is v. keen to make off with the micro scooter, having been practising in the house all winter....so if we were to get another scooter for ds, which one would we get? The micro is so fab and I'm not sure if a cheapie scooter from argos will match it. But reluctant to buy another expensive scooter if a cheaper one will do. Also, not sure he's ready for a 2-wheeler, he's small for his age. Any advice?