I have one. I bought one for my DH's granddaughter, and then bought one for myself to use when she's visiting and, eventually, for my daughter.
There's a small part of me that is looking forward to her outgrowing her rear-facing Radian just so she can ride in the Frontier. It just looks so comfortable! She has sat in it (not in the car) and it's so very adjustable and accomodating. It fit her at not much over 25 lbs, and it fits DH's granddaughter at a very large six years old. Which is nice because she behaves horribly in a booster.