God this is complicated. Getting a newborn carseat was so easy!
DH has a car for work (long commute) and I have one too for in the week. DH prefers his car at weekends so our Maxicosi Familyfix Isofix tends to swap cars quite a bit.
Our two first choices for car seat were out as one (MC Priori) does my car but not his, the other (Britax Safefix) vice versa - so we're left with a Britax Duo, which does fix both.
But is it practical swapping the far bigger, bulkier carseats over the way we did the newborns? They look huge... Or will we just have to get one which fits my car, and use that one at weekends?