We had a backless booster and I hated how the shoulder belt would fall down my daughters arm. There was a little positioning strap, but it was pretty useless. She loves this new seat with the high back, it has a pretty design and is still for "big girls not babies". I love how it holds the seat belt exactly where it should be, had cup holders and has head support for when she falls asleep occasionally. I would change a couple things - I wish the cup holders were deeper, some taller cups tip over, and I wish it connected to the latch system for further stability.