I have recently gone booster seat mad and had a look on the racv website. the sns hiliner rated the best for the 4-7 age group (I think it was five stars). Babylove ezy combo (convertible booster) rated best for the 6month to 4 year age group (four stars) and is on par for the 4-7 age group (three stars) with the maxi rider in that age group too