We have Britax Marathons for both boys in my car but for dh’s car & MIL’s car we have Graco ComfortSport. It can be rear-facing up to 30lbs (we are big rear-facing as long as possible ppl too) & forward facing up to 40lbs.
I know you said you want something that can go higher than 40lbs but in general the suggestion is “40 inches and 40 pounds and 4 years old” to move to a booster. In most cases (@ least w/ my friends) the kids reach 40 inches & 4years old long before 40lbs so by the time they do reach 40lbs they are more than ready for a booster. Just my 2 cents.
Anyway, we love this carseat – it’s comfy for the boys & got great ratings for a less expensive option. Best of all: we got it for around $78 at Walmart!
http://www.gracobaby.com/catalog/product.aspx?modelNumber=8C00LNW2&CategoryID=1
HTH!erinntx2008-11-05 14:04:59