I'm currently looking for a convertible car seat for my one year old son. He weighs about 24/25 pounds and is about 28 inches tall. I drive a 2006 Chevy Trailblazer. I have a 6 year old son who is 65 pounds and is in a booster currently. I think I have my choices of seats narrowed down to the following 4 seats and would like feed back on my choices of seats. They are the Britax Advocate 70 G3, the Recaro ProRide, Chicco NextFit and the Diono Radian RXT.