Hi, I'm getting really confused about baby car seats. I'm 27 weeks pregnant and buying one is next on my list. I'm getting lots of second hand things but a car seat is something I think is important to buy new. I'm being given an oyster travel system so ideally want to buy a car seat that will fit on it. I've not seen it but it's from a friend of a relative and has lots of new unopened extras I've not been to look at yet... Should I just buy the oyster car seat? The thing that is confusing me is that it says you can attach an oyster compatable car seat but even with an oyster car seat you also need to buy an adapter.. Are there better car seats that you can fit onto oyster travel systems? The oyster car seat looks fine I'm just a bit put off by the extra charge of an adapter. I've got serious baby brain, and can't get my head around travel systems. Help!