I did months of research, literally months, to try to find a stroller that I would be happy with for my big kid and baby that would be small enough to bring anywhere. I purchased the Peg Perego Pliko P3, it works with car seats and has a toddler board for standing. The little guy sits in front and the 3 year old stands and rides. It is awesome when you are places like the Zoo where she wants to explore but ride to the next location and also does not seem rediculous when you only have one child riding in it like my double stroller did, so it will work until my little guy does not want to be in a stroller. I almost feel I want to keep my awesome find a secret but my sister has a sit and stand and wishes she had what I have. It is more money but worth every penny, great for stores, for walks, for the airport, and just running in somewhere when you dont want to have to carry a baby and try to hold onto hands at the same time. I found mine online on clearance, last years model.