The reason I ask is that I am expecting DC2 and can't decide whether to get a double side-by-side buggy (my preference) or a phil & ted style buggy (one underneath the other!). DC1 will be 21 months and whilst I know he will initially want somewhere to sit, when do the start wanting to be independent/scooter etc? Don't want to be pushing DC2 in a double buggy on their own!
Many thanks