I have 4 kids all in seats of some sort currently and was hit by another car today and need replacements. My 7 week old is in a Britax Chaperone and we'll be getting the same seat, my 7yo is in a Britax Frontier 90 and will get the same, 9yo in the Frontier 90 as a booster and we'll get the same for her too. It's my 4yo I am not sure of. She is in an Advocate now which we got when she was ~1yo and rear facing. She is now FF so I'm unsure of Advocate or Pinnacle. The price is basically the same, just wondering if there is a benefit to one over the other at this point. She's small for her age so she'll be harnessed awhile, and can ultimately use her sister's Frontier when she outgrows the Advocate (that was our plan anyway), so I don't necessarily need the option to booster her in that seat later on. Opinions on which is a better fit for a 4yo?