Hi, I am expecting our first baby next year and am starting to look at products. Car seats have completely thrown me - how are there so many options?? I get the different groups, isofix etc but I don't get how you actually decide on one when they all look the same. Also why would you go for a 0+ car seat when there are ones that would last a lot longer? And what is the difference between a £50 car seat and a £300 car seat?