Worth the Investment x 2!
I researched which car seat to purchase for our 10 month old twins for several months and kept returning to the Britax line of car seats, specifically the Advocate 70 CS because of its side impact technology, extensive safety features and use up to 70lbs. The Britax website had videos to watch about the safety of their seats, the testing the seats undergo and the quality of materials and care that is utilized in their manufacturing. Granted, the price tag is not small, but the seat can be used for several years and fabric is easily replaced if it becomes soiled or damaged over time.
The seat is large so it may fit better in bigger vehicles. I liked the recline options and the padding is very comfortable for the child. The harness is easy to operate and the "click safe" feature is nice because it gives an audible click when the harness reaches appropriate snugness.
I chose the Serene (aqua blue/tan) color because it was the lightest color option available. We live in a hot climate and the inside of the car is like an oven, darker fabrics become very hot. I really like the Serene, it is slighter darker than it appears in the manufacturers photo, regardless it is very nice looking. Overall, I have no complaints about the seat, and the kids seem to be very happy with it as well!
Quality of Fabric and Manufacturing