Hello! DS will be 3 in a couple of months and is growing so rapidly in the last few weeks that the poor little mite is now banging his head everytime he gets in and out of the car seat. Obviously this isn't ideal so I've been searching for a replacement. Most of the next stage seats are for 4-11yrs and hence do not have a 3 point harness and rely on the seatbelt attachment. I'm not entirely convinced that DS would be entirely reliable YET to trust in the back seat with a quick release system. Any ideas about a seat that could do the trick or has anyone else had to move to the next stage and found it was ok?