Originally Posted by olamaca
Britax are the best car seats for children.
I don't know if I'd agree with that. We had a Britax Blvd. 70 in my wife's car and a Radian in mine. We just ordered another Radian to use in her's. The Britax doesn't feel nearly as solid (I bet it's 10lbs lighter than the steel framed Radian). My 15 month old son seems a whole lot more comfortable in the Radian - he would fight you abotu 1/2 the time to try to avoid going in the Britax but hasn't had a problem in the Radian.
Both are in the $250-300 ballpark - but I'd recommend the Radian.
When our son was smaller, we used Chicco Keyfit 30. It was great when he was light enough to actually detach it from the base and carry him in it. I think we ditched it at about 9 months (just before a 9 hour, each direction, road trip) to give him a little more room in the bigger convertible seat.