Recommendations for rear facing car seat

[owlofathena]

I'm after recommendations for a rear facing car seat.

My 20month old daughter is just below the 25th centile for height and weight (currently 9kg) and is still comfortable in her original baby carrier car seat. We have the kiddy luna fix which still has plenty of room left for her height wise and has a weight limit of 13kg. So everything is fine at the moment however we are expecting our second child in December so wanted to move daughter into a larger rear facing seat as soon as possible. Only problem is there are so many to choose from!

My parents have bought the joie stages for use in their car which my daughter is very happy in. I understand this rear faces up to 18kg which for my daughter won't be until she's 5 or 6, according to her red book. I was wondering if anyone had this seat and uses it rear facing for an older, lighter child.

We want to rear face for as long as possible so I am starting to wonder whether I should buy an up to 25kg seat like the axkid move (mini kid is unfortunately out of our price range at the moment).

Would a 25kg seat be pointless as my daughter is on the small side and would the joie stages be better for the long term? I understand no one can give me a definitive answer, just looking for other people's experiences. The world of car seats is a mine field.

Thank you