When I was looking for a convertible car seat for my son, I started asking around the mommy community. Sunshine Kids, now Diono, came back hands down the favorite. For many reasons, Radians rank amongst the best car seats available. This seat is very heavy. If you are a person who moves the seat around a lot, this could be a negative for you, but it is heavy for a reason. It has a solid, metal frame, which makes it unbelievably sturdy. It folds up pretty small, which makes it great for travel. It installs very easily with the Super latch system or a seat belt. The seat cover can be completely removed for easy washing. My only complaint is the lack of cup holders. It actually makes me quite crazy not having cup holders in these seats. My younger son has the new Diono Radian, and this seat did come with a removable cup holder, but it is completely useless. By the time my son was old enough to know how to use it, he immediately pulled it out and threw it on the ground. That started at about 1 year old and now over 2, he still takes it out and throws it if I put it in...so we have completely stopped using it. But, considering this seat some of the highest rear facing weight limits, amazing crash test results, very high weight and height limits for the 5 point harness, I can overlook this shortcoming.