The
Safeseat 1 is outgrown when the weight limit is reached which is 30lbs or there is less then 1" of hard shell above the head; the 32" height limit is just a guideline.
It is best to keep children
rearfacing (
RF) for as long as possible and it's recommended to
RF until the max.
RF limit of your seat. So at 22lbs I would be looking for a convertable.
In the US the Cosco seats
RF to 35lbs (and
FF (forward face) to 40lbs) and would keep her
RF the longest.
The
Scenera and Uptown are quite poplular. The Scenera can often be found for $35-$40 and the Uptown is around $100.
Other seats that would last you longer in the long run would be:
The Fisher Price Safe Voyage Deluxe (FPSVD)- It
RF's to 33lbs and
FF to 55lbs. It is made by
Britax and is similar to the
Marathon (MA) but doesn't have built-in lock-offs and the
RF tether. Can be found for around $140.
Marathon- it is
RF to 33lbs and
FF to 65lbs. It has built-in lock-offs and it can be tethered
RF. Can be found for about $230.
Radian by Sunshine Kids-
RF to 33lbs and will
FF to 65lbs, can tether
RF. This seat can sometimes be hard to install. Can be found for around $180.