Hoping my fellow Bees have some car seat suggestions for us. C is ready to move up to a convertible seat and I'm not sure what seat will fit in my husband's 2 door Ford Focus hatchback. We are more than 3 hours away from the nearest store where we could actually try out a seat.

We have a Britax Marathon for my car, although we haven't installed it yet. She's typically only in the Focus for the short trip from the sitter to home each day.

We also need to get a convertible seat for the sitter's car that doesn't cost an arm and leg, but I suppose that's another post!

Any suggestions for a quality, safe convertible seat for B's car?