I've just seen the Britax Elite which uses the 5 point harness up to 25kg (not sure if it's been revamped as it seems there were ones which had harnesses up to 18kg before). I'm thinking that could be a good option for my 3 year old who weighs just over 13kg, rather than go for a multi stage 1/2/3 which I believe haven't been rated as good as single stage seats on for safety.
Anyone got one or know about it?