My sister has Britax car seats for her two children so she recommended them for my first born. I love the design of this one and I know it is safe. It was easy to install and fits very snug. I found the best price at BabyAge.com and I am very happy with the delivery.
View Advocate 70-G3 Convertible Car Seat
I purchased a Britax Marathon for my daughter after she complained that her back hurt in the eddie bauer car seat we had for her. She loves her car seat, never complains anymore. Her head doesn't flop forward while she sleeps like it did in her old car seat. It's so easy to get in and out of the car too. My husband loves that part. I just purchased a new one for my 21 mo old son as well. Well worth the price difference. I convinced one of my miser friends to purchase a Britax and she looooooves it too. You won't regret the purchase and your kids will appreciate the comfortable ride.
View Marathon 70-G3 Convertible Car Seat