Wow, this is, in my opinion, the best convertible car seat on the market. Any car seat by Britax is made with such care and concern for the well-being of the children in mind. They truly have thought of everything. I have had this car seat for my son since he was around a year old (I would have had it sooner if I knew then what I know now). He is now 5 and is STILL in this car seat. It was the best money I have ever spent. The most pronounced feature of this car seat is that it is good up to 65 pounds and 49 inches tall. This surpasses almost all other 5-point harness seats that only go to 40 pounds. I was NOT ready to put my son in a booster seat at 40 pounds.
Sure, all car seats are tested to certain safety standards, but they are only that safe if they are used correctly. Britax makes it so easy to use their seats correctly. The seat installs easily, either with a seat belt or the LATCH system (refer to instructions that come with it). The harness straps are the best. They are made not to twist. That was one of my biggest frustrations with other car seats. It is not safe if the straps are twisted. The padding on this seat is luxurious and comfortable. My son can sleep for a long time in it without complaining. It also comes in many fun patterns, and you can change the covers for a different design. It is a little heavier than some other seats, but this is of minor concern compared to the advantages. Just by placing this seat next to another ordinary car seat, you can examine the differences for yourself. It is worth every penny. I tried to get around purchasing one at first, I couldn't justify the price. I tried probably 5 other seats, and returned all of them because there was no padding and the straps were a nightmare. I would never buy another brand now that I have owned a Britax. You can't put a price on your child's safety and comfort.