i have a pliko, and i used the toddler step on it even tho my daughter was 4 at the time, u cant use it wen the pliko is in pram mode, but can wen in stroller mode only sat up. i still found it easy to manouver with a 4 year old on it.
i was orginally goin to have the 3d as it also has the toddler step but i found it to be heavier then the pliko x