SAFETY 1ST WAS NOT QUITE A PREFERENCE AT FIRST SINCE IT WAS MUCH CHEAPER THAN ANY OTHER BRAND BUT ITS THE BEST THING THAT HAPPENED TO US. OUR BABY LOVES IT AND IS VERY COMFORTABLE SEATING OR SLEEPING ON IT. ONLY IF HE NODS ON TO HIS SIDES ITS A PROBLEM, I FEEL THE CUSHION MUST BE MADE BETTER AND MORE EASING FOR LIL, GENTLE BABIES. IN LONG JOURNEYS MY BABY DOESNT COMPLAIN BUT HE JUST CANNOT SLEEP WELL. sO FOR ME THE ONLY NEGATIVE THING IS IT DOES NOT COME WITH ENOUGH CUSHIONS FOR HEAD AND SHOULDERS.  BUT HOWEVER IT IS EASILY ADJUSTABLE, AND CAN BE COMFORTABLY OPENED AND REATTACHED WITHOUT MUCH...