I'm gonna have to get a Radian to get Sean as close to 4 RFing as I can, but he still fits in his Scenera and Truefit for now. And it's looking like he is somehow going to last longer in the Scenera than Quinn did, by height. Weight is still gonna get him out of both between 2-2.5 yrs old, most likely . Dang 90-95% kiddos, DH isn't gonna like having to spend $250 on another car seat.