Just because I like to think of worst case scenarios.... after all my research I ended up with Cleks and Britaxes. Totally bought into the React and Safecell and rebound bars and EPP foam and marketing! Then the Evenflo Sureride gets the best crash rating of all the seats! $80! Plastic! Anyway, my mother does have a Next Fit in her car, which got a Best rating . It never gets used. Is it totally crazy to switch out the Britax G4 that is FF in my husband's( basic rating) for the Next Fit. Because this is what goes through my mind....62 lb dummy pulls through the harness FF at 35 mph. Does that mean a 40 lb kid will do the same in a 40/45 MPH crash? Is it better to have a bigger safety margin since I have both seats at my disposal?