Hi, I’m about to move my 4 year old into the next car seat up. He’s currently in a Cybex Sirona Z I-size which I’ve kept rear facing til now. My almost 2 year old will now go into that seat. I cant decide between the BeSafe Flex Fix 2 or the Britax Romer Kidfix pro. Does anyone have any experience of either of these seats? Also wondering if either of these seats would fit in the middle seat next to the Cybex for the rare occasion we need an adult to go in the back? We’ve got a Ford Kuga. Thanks!