We are about to purchase a new car seat for our one year old son...what are your opinions on forward or backward facing seats? I always assumed he would move into a forward facing seat after his maxi cosi pebble, but my DH has researched that a backward facing seat is best upto 4yrs, as their neck muscles etc are still not developed enough to withstand an accident in a forward facing seat until 3-4 yrs.... we've be looking at the BeSafe Combi X3?