We have a Graco literider which I really like. It has a parent tray, child tray, reclines, has a huge storage basket and folds up pretty easily. The only problem I'm finding is that is only has a 3 point harness. Now that DD can walk, I am thinking that a 5 point harness would keep her contained a little better. Is it worth getting a new stroller, just for the 5 point harness or will she soon enough outgrow the need for the 5 point harness? She twists around and sort of tries to climb out. No success yet, but it seems like it's just a matter of time.

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She will just scream louder while she is trying to twist out of the 5 point harness.
I wouldn't buy another stroller for the harness. She'll outgrow this stage eventually.