Graco SlimFit 3-in-1 car seat vs 4ever Extend2Fit?

Kristen

I'm looking at the Graco models of convertible car seats, specifically at the SlimFit vs the 4ever Extend2Fit. They seem pretty similar except that the 4ever can convert to a backless booster, safe for up to 120 lbs instead of 100 lbs with the SlimFit. The SlimFit is slimmer and less clunky than the 4ever. I'm curious if people have used one or other and their thoughts. FYI, this would be after using a separate infant seat.

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