There is a car seat safety group on Facebook, if you post her height and weight they can recommend a good one that will last her a while
We got a car seat that goes up to 12years old -ossan 360 We paid £160 from synths and it saves money in the long run
Definitely go for one that spins as it makes it sooo much easier for getting them in and out, and also it means you can rearward face for longer which is safer. My 4 year old just outgrew the Joie 360 spin and so now baby is in it
I'm having to change from our first baby seat aswell and have been looking at the Joie i-Spin 360. It has a lot of good reviews and I've had it personally recommended plus I'm hoping the spin part will help as my LG is growing fast so getting her in and out is getting a bit awkward x