Consider how your child will be fastened in the stroller. Most strollers have a 3-point system, where a strap is attached to each side of the stroller and a strap comes up between the legs, and all three straps attach in the middle of baby's waist. This works fine for some, but not so great for especially active kids. I works fine with this system, but active kids constantly leaning out and over this restraint and practically falling.The new stroller has a 5-point harness, which has an additional two straps that come down over the shoulders and meet up with the others at the waist. This helps to hold the child's upper body in, as well, to give more restraint. Some kids may not like this either, but being used to the car seat straps just like this.