Our DS just turned 1 and is still in his infant seat, but we are starting to shop for our next seats. My DD is 3.5 and is currently in a britax marathon convertible seat. She is on the smaller side 36" and around 27 lbs.
I'm wondering if it would be best just to get her into a combo harness/booster seat like the britax pinnacle or just to buy another set of marathons. If we bought her a new seat, then my son would move into her marathon seats. We have to buy two seat (one for each of our cars).