We don't have one Stacey, I have only seen one. From what I have heard, many babies grow out of them in different ways, ie through height and also because they are quite narrow in width around the arm region (of that makes sense!) so the seat becomes a bit too snug.
After getting some expert advice we decided to order a seat from Sweden. This one
Britax Multitech It RF from 9 to 25kg and has the added benefit of ensuring RFing for atleast 4-5years as the head rest grows with the child. It works out to be roughly $750 NZD with shipping, although it is being sent to Italy not here.. (I'm itching to get my hands on it!

) It's a little more expensive sending here.. ie 75 euro for shipping to NZ
Our good friends have the Britax two-way, which for them worked out to be about $650 including shipping to NZ. That is a great seat and for roughly the same price as the Brio I would definetly go for the two-way instead. It also RF to 25kg and they have it installed in a small car very comfortably.
These seats are perfectly legal to import and use in NZ too as NZ recognises EU safety standards.
If you email Hakan, he is fantastic, very helpful and informative, also replies quite quickly too.
Another option is a Radian, which is supposed to be coming into the country sometime soon, this has the benefit of extended RFing, although I don't actually know too much about it TBH. There is a great thread on the Carseat forum on the Nappy Network all about this seat which has awesome info. It's right up the top
HTH