I have a Phil and Ted which has been unreal. I can go shopping with the two of them and not worry about fitting down isles and I go walking all the time. I felt the same about the bub in the back, but my boy doesn't seem to mind and my little girl also like to go in it sometimes (she thinks it's fun). Without it I wouldn't get out by myself with them nearly as much. The attachment seat can go under when the bub is old enough or on top for the toddler when the baby is new. The only annoying things I find are the straps to put it up and down, I was spoilt by my beema which is so easy.