A.G.
Triple strollers are just not worth the money unless you are having triplets. I think you will find that your four your old is going to grow in independence so fast that he won't want to ride a stroller like the babies. Truely I have two three year olds and a 8 month old. I put my double away when the baby came and the big kids jsut have to walk. Plus its better exercise for them and makes it more likely that I will get some downtime. There was whining and trouble getting them to stay with me for the first month and now everyone is totally fine with it. By four your older one really can do without a stroller other than exceptional circumstances when you can do the double and sling or take an umbrella stroller for him when there is a second parent available. Also for things like the zoo I take a wagon. The baby seat can go across half of it and the kids just jump on and off as they tired and if I need to bust my butt somewhere they all fit if they had too even if it wasn't all day comfort.