I have a Britax Roundabout that I have used both RF'ing and FF'ing and I love it. I also just got a Britax Marathon to use FF'ing and I really like it also! Britax is a good way to go and you can usually find decent sales.
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Britax Marathon here. We're still RFing so I can't speak to how it is FF, but I LOVE it for RF. it's reall cushy and seems very comfy for LO. Ours was gifted to us, I don't know that we'd have been able to spend the money on it ourselves.
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Re: Convertible Carseat
www.carseatblog.com.
I have 3 Britax seats, but I got them all on super clearance. Otherwise, I probably would have gone with something else.