The Asda nappies get good reviews and I don't think you need to worry too much about leakage etc for the first few weeks because you'll be changing LO so often anyway, it's not like when they're older and you need the nappy to last through the night. I bought 5 packs a couple of weeks ago, which is 220 nappies. I think that'll be about 3 weeks supply. They do up to 11lbs so I'm debating whether to get more - at £1 a pack I think it's probably better to buy too many than not enough! If LO is only 7lb something when he's born, he could be in them for weeks. Saying that, I don't know how long it takes for a baby to put on 4/5lbs - anyone have any idea???