After my husband was rear ended with our carseats in the car (fortunately no kids) we had to trash the old ones and find replacements. My kids are 2 and 4 and so I wanted car seats that my kids could grow into. I use it with the 5 point harness with my 2 year old and as a booster for my 4 year old. I love how the straps on the 5 point harness do not get twisted. It is easy to release and tighten. Also adjusting the straps is fairly easy. For the booster I love how you can adjust the height where the seat belt comes through. My only complaint is the the cup holder isn't in a great place. My 2 year old can't even reach it.