I'm going to have to switch my twins to convertible car seats (hate giving up the convenience of infant seats). I have five kids in my sienna, and I think I'm going to have the twins in the middle row next to ea j other to allow the other kids to get to the back row easier and so I can help big sis buckle her seat. Therefore, I need a relatively narrow convertible car seat for the twins. I have always liked britax but didn't know if they would be too wide.