My DS is now 23 months, currently we are using a Britax First Class Plus car seat.
Although he is only 14kg (the seat limit is 18 kg) his body length is quite long and we are getting near the point where the shoulder straps are below shoulder height. The top of his head is about an inch from the top of the seat. Because we want to keep him in a 5 point harness for as long as possible, we are looking at group 1-2-3 seats. The obvious one that pops out is the Britax Evolva.
The one thing I wonder is if the 5-point harness in that will actually cater for a taller child then his current seat. Does anyone else have a group 1-2-3 seat, and if so, how long did you manage to keep your child in the 5-point harness?
We are going to have to get a new seat sooner or later; on his current growth curve he will exceed the weight limit by his 3rd birthday!