From next month I will be looking after my 8 month old grandson a couple of days per week. I am looking to buy a car seat for him that will last for a good while. My Dil wants him rear facing for as long as possible so I am looking to buy something that starts rearfacing but that will grow with him. I'm not looking to pay 100s of pounds but don't want to buy rubbish. It's 30 years since I bought a car seat so I'm a bit out of touch with what is good bad. Any advice please?