Convertible carseats

I know this asked a LOT. I've searched through most of them that I could.

But I just can't really decide.

I'm looking at either the graco extend to fit or a safety first brand (can't remember which model). I really kinda like the safety first one though, with graco I kinda feel like I'm just paying for the name.

So please help me decide!! I don't want to spend an arm and a leg, but I'm also willing to pay for good quality.