My daughter will be 5 at the end of June. She is currently 41” and 41.5 lbs. and is in a Britax Advocate Clicktight, in a 2012 Ford Fusion. Due to a minor accident with the Fusion, the Britax car seats are being replaced. (I have a younger daughter too.) Should I buy another Britax Advocate, or get a Britax Pinnacle? Is she more protected in the convertible car seat than she would be in the harnessed booster? Any advice or tips would be much appreciated.